Each club is responsible for submitting to UEFA an A list of players (List A) and a B list of players (List B), duly signed by the club and verified, validated and additionally signed by its association. These lists must include the surname, first name, date of birth, shirt number and name (if applicable), nationality and national registration date of all players to be fielded in the UEFA club competition in question, as well as the surname and first name of the head coach and first assistant coach. In addition, the lists must include confirmation from the team doctor that all players have undergone the requested medical examination; the team doctor is solely responsible for ensuring that the requested players’ medical examination has been duly performed.
Only players who are duly registered with UEFA by means of List A or B can validly serve pending suspensions.
The club bears the legal consequences for fielding a player who is not named on List A or B, or who is otherwise not eligible to play.
No club may have more than 25 players on List A during the season. As a minimum, eight places are reserved exclusively for "locally trained players" and no club may have more than four "association-trained players" listed in these eight places on List A. List A must specify the players who qualify as being "locally trained", as well as whether they are "club-trained" or "association-trained".
A "locally trained player" is either a "club-trained player" or an "association-trained player".
A "club-trained player" is a player who, between the ages of 15 (or the start of the season during which the player turns 15) and 21 (or the end of the season during which the player turns 21), and irrespective of the player's nationality and age, has been registered with the player's current club for a period, continuous or not, of three entire seasons (i.e. a period starting with the first official match of the relevant domestic championship and ending with the last official match of that relevant domestic championship) or of 36 months. In the context of this paragraph, the season immediately preceding a player’s 15th birthday may be counted if the player's birthday is after the last match of the relevant domestic championship but before or on 30 June (winter championships) or 31 December (summer championships), and the season immediately following the player's 21st birthday may be counted if the player's birthday is on or after 1 July (winter championships) or 1 January (summer championships) but before the first match of the relevant domestic championship.
An "association-trained player" is a player who, between the ages of 15 (or the start of the season during which the player turns 15) and 21 (or the end of the season during which the player turns 21), and irrespective of the player's nationality and age, has been registered with a club or with other clubs affiliated to the same association as that of the player's current club for a period, continuous or not, of three entire seasons (i.e. a period starting with the first official match of the relevant domestic championship and ending with the last official match of that relevant domestic championship) or of 36 months. In the context of this paragraph, the season immediately preceding a player’s 15th birthday may be counted if the player's birthday is after the last match of the relevant domestic championship but before or on 30 June (winter championships) or 31 December (summer championships), and the season immediately following the player's 21st birthday may be counted if the player's birthday is on or after 1 July (winter championships) or 1 January (summer championships) but before the first match of the relevant domestic championship.
If a club has fewer than eight locally trained players on its List A, the maximum number of players that can be registered on this list is reduced accordingly.
List A must be submitted online by the following deadlines:
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3 July 2025 (24:00 CET) for all matches in the first qualifying round;
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17 July 2025 (24:00 CET) for all matches in the second qualifying round;
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31 July 2025 (24:00 CET) for all matches in the third qualifying round;
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14 August 2025 (24:00 CET) for all matches in the play-offs;
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2 September 2025 (24:00 CET) for all matches from the first match in the league phase up to and including the final.
For the qualifying phase and the play-offs, a club may register a maximum of two new eligible players on List A after the above-mentioned deadlines, provided the quota of locally trained players is respected. This registration must be completed by 24:00 CET the day before the relevant first-leg match and the club’s association must confirm in writing that the new player is currently eligible to play at domestic level. If the registration of a new player causes the number of players on List A to exceed 25, the club must remove a player registered previously to reduce the number of players on the list to 25 again.
Each club is entitled to register an unlimited number of players on List B during the season. The list must be submitted by no later than 24.00 CET on the day before the match in question.
A player may be registered on List B if he is born on or after 1 January 2004 and has, since his 15th birthday, been eligible to play for the club concerned for any uninterrupted period of two years, or a total of three consecutive years with a maximum of one loan period to a club from the same association for a period not longer than one year. Players aged 16 may be registered on List B if they have been registered with the participating club for the previous two years without interruption.
Each club must include at least two goalkeepers on List A and at least three in total (List A and List B combined).
Exceptionally, a replacement after the deadlines set in the present regulations is permitted in the following cases and under the following conditions:
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Long-term injury or illness of a goalkeeper: the club concerned may temporarily replace the goalkeeper concerned and register a new goalkeeper at any time during the season. The club must complete the official registration of List A with the replacement goalkeeper. An injury or illness of a goalkeeper is considered long-term if it lasts at least 30 days as of the day the injury or illness occurred. If the goalkeeper recovers before the end of this 30-day period, the player remains nonetheless not eligible to participate in any UEFA club competition (i.e. UEFA Champions League, UEFA Europa League or UEFA Conference League), until the end of such period. The new goalkeeper does not have to be locally trained, even if the replaced goalkeeper was. The club must provide UEFA with the necessary medical evidence in one of UEFA's official languages. Before confirming the replacement, UEFA may require further medical examination of the goalkeeper by an expert appointed by UEFA at the club's expense. Once the injured or ill goalkeeper is fit to be fielded again, he becomes eligible and/or can resume his position in place of his substitute, who must consequently be removed from the list. The return of the original goalkeeper must be announced to the UEFA administration at least 24 hours before the next match in which the original goalkeeper is due to play.
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Outgoing permanent transfer of one or more goalkeepers: the club concerned may replace the goalkeeper concerned and register a new goalkeeper after matchday 6 and before the end of the league phase. The club must complete the official registration of List A with the replacement goalkeeper. The new goalkeeper does not have to be locally trained, even if the replaced goalkeeper was. If the club qualifies for the knockout phase, the goalkeeper added during the league phase shall be considered as one of the three new players that may be registered for the knockout phase in line with Article 32. At this point the quota of locally trained players on List A must be respected.
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Long-term injury or illness of an outfield player: during the league phase until matchday 6 included, the club concerned may temporarily replace a maximum of one outfield player and register a new outfield player. The club must complete the official registration of List A with the replacement player, who must have been registered with the club in accordance with Paragraph 30.01 to Paragraph 30.06 before the deadline for List A referred to in Paragraph 31.09(e) (i.e. 2 September 2025 - 24:00 CET). An injury or illness of an outfield player is considered long-term if it lasts at least 60 days as of the day the injury or illness occurred. If the outfield player recovers before the end of this 60-day period, the player remains nonetheless not eligible to participate in any UEFA club competition (i.e. UEFA Champions League, UEFA Europa League or UEFA Conference League), until the end of such period. If the replaced outfield player was registered as a club-trained player or an association-trained player, the quotas for club-trained players or association-trained players must be fulfilled with the replacement. The club must provide UEFA with the necessary medical evidence in one of UEFA's official languages. Before confirming the replacement, UEFA may require further medical examination of the outfield player by an expert appointed by UEFA at the club's expense. Once the injured or ill outfield player is fit to be fielded again, he becomes eligible and/or can resume his position in place of his substitute, who must consequently be removed from the list. The return of the original outfield player must be announced to the UEFA administration at least 24 hours before the next match in which the original outfield player is due to play.
With regard to the definition of a “season” to be found in Paragraph 31.06 to Paragraph 31.07 of these regulations, as far as the determination of “locally trained players” is concerned, the relevant dates to be taken into account are those of the respective domestic championship calendar as originally scheduled, i.e. the prolongation of a domestic championship calendar due to an extraordinary situation, such as in the case of the 2019/20 season, is not taken into account. Furthermore, for the 2020/21 season, the period starting with the first official match of the relevant domestic championship and ending with the last official match of that relevant national championship is counted as a full season regardless of the actual start and end date due to the extraordinary situation.