As of the quarter-finals, a club may register a maximum of three new eligible players for the remaining matches in the current competition. Such registration must be completed by 16 March 2023 (24.00CET) at the latest. This deadline cannot be extended.
Any or all of the players from the above quota of three may have been fielded for another club in the preliminary round, round 1, round 2 or the group stage.
If the registration of such new players causes the number of players on List A to exceed 25, the club must remove the necessary number of currently registered players to reduce the squad to 25 players again. The quota of "locally trained players" must be respected when registering new players. Newly registered players must wear set numbers.
If a club cannot count on the services of at least two goalkeepers registered on List A because of long-term injury or illness, the club concerned may temporarily replace the goalkeeper concerned and register a new goalkeeper at any time during the season and complete the official registration List A with a goalkeeper fit to be fielded. An injury or illness is considered long-term if it lasts at least 30 days as of the day the injury or illness occurred. In case the recovery of the goalkeeper occurs before this 30-day period, the player must remain out of the player List A until the end of such period. The club must provide UEFA with the necessary medical evidence in one of UEFA's official languages. UEFA may require further medical examination of the goalkeeper by an expert appointed by UEFA at the cost of the club. Once the injured or ill goalkeeper is fit to be fielded again she can resume her position in place of her nominated substitute. The return of the original goalkeeper must be announced to the UEFA administration 24 hours before the next match in which the original goalkeeper is due to play.
Exceptionally, at any time during the season, the club may temporarily replace
a pregnant player who has decided to provide employment services to her club in an alternate manner in line with Article 18quater 4.b. of the FIFA Regulations on the Status and Transfer of Players, or
a pregnant player who is not able to continue to provide sporting services to her club, nor provide employment services to her club in an alternate manner, because of health reasons attributable to the pregnancy, or
a player who has taken maternity leave
by completing the official registration List A with a new eligible player, subject to Article 45.
Alternatively, on completion of her maternity leave, a player may resume her position on the official registration List A in place of her nominated substitute.
In all cases, the registration of a player as stipulated in this paragraph must be announced to the UEFA administration 24 hours before the next match in which the player in question is due to play, together with the relevant justification as required in this Paragraph under a. to c., i.e. statement signed by the player and the club, and/or medical certificate.