There are two stages for UEFA Champions League.One is: the group stage, and one isthe knockout stage.So before Before each of this stage a teamthese stages teams have to submit their team membermembers list in front ofto UEFA.
And inIn case of Coutinho, he played for Liverpool in group stage and he is going to play in Barcelona in knockout stage of the league.Because he will not Every team in the knockout stage has to submit their new players list to UEFA after this January transfer window. Coutinho won't be listed in theirthe player list that will be submitted by Liverpool to UEFA.Andand will be included in FC Barcelona squad for knock outknockout stage.So So there is no problem in that he can play for the rest of matches offor FC Barcelona in UEFA.Every team who selected to play in knock out stage have to submit their new players list to UEFA after this January transfer window.
So currentlyCurrently he is one player belong toa FC Barcelona player.And its not It doesn't matter that where he was at group stage ,or is or in which team's list he was included in team in ealierearlier.its matter It only thatmatters where he plays while the team wins the league.So So in this season if FC Barcelona wins the UEFA Champions league he also wins it.one more golden leaf in the career of Coutinho.