However, teams can only add a maximum of three new players to their List A squads, and squad lists cannot exceed 25 players. If a list currently includes 25 names, players needed to removed or leave the club in January, in order for new players to be added in.

The January window has left Man City, Aston Villa and Spurs with some UEFA registration dilemmas; most teams can only register three new players between the league phase and the knockout rounds - City,

Manchester City and Paris Saint-Germain each faces a shocking early exit from the Champions League for the first time in more than a decade.