Before the match, each team shall indicate in the relevant match sheet the numbers, surnames, first names and, if applicable, shirt names of the 23 players in the squad, together with the surnames and first names of the officials seated on the substitutes’ bench and on the additional technical seats. The goalkeepers and team captain must be identified. Players must wear the shirt and short numbers as indicated on the match sheet. The match sheet must be validated by the competent club official.
The 11 players indicated on the match sheet as forming the starting 11 must commence the match. The other players are designated as substitutes.
Both teams must submit their validated match sheets at least 75 minutes before kick-off.
Only three of the substitutes listed on the match sheet may take part in the match. A player who has been substituted may take no further part in the match. Exceptionally, a fourth substitute listed on the match sheet may take part in knock-out matches exclusively during extra time.
After the validated match sheets have been submitted no changes are allowed. Before the match has kicked off, the following exceptions are possible:
If any of the 11 players indicated on the match sheet as forming the starting 11 are not able to start the match due to physical incapacity, they may only be replaced by any of the substitutes listed on the initial match sheet. The substitute(s) in question may then only be replaced by a registered player (players) not listed on the initial match sheet, so that the quota of substitutes is not reduced. During the match, three players may still be substituted.
If any of the substitutes listed on the match sheet are not able to be fielded due to physical incapacity, they may only be replaced by a registered player not listed on the initial match sheet.
If none of the goalkeepers listed on the match sheet are able to be fielded due to physical incapacity, they may be replaced by registered goalkeepers not listed on the initial match sheet.
The club concerned must, upon request, provide the UEFA administration with the necessary medical certificates.