UEFA announce big rule changes for Champions League and Europa League.
UEFA have announced that from next season onwards, clubs participating in the Champions League final, Europa League final and the Super Cup will be allowed to name 23 players in their match-day squads.
 The change – which will allow 12 substitutes instead of seven substitutes to sit on the bench during these finals – is one of a number of adjustments to be made by European football’s governing body which will come into effect in the 2018/19 season.
Additionally, in the knockout stages of the Champions League and Europa League, clubs will henceforth be able to use a fourth substitute during extra time, it has now become common in competitions such as the English FA Cup and League Cup.
Clubs will also soon be allowed to register three new players after the group stages of both the Champions League and the Europa League without any restrictions.