The issue of these star players playing individual football instead of displaying good team work has become an issue that is affecting their performance as a team, this is what Alonso has to deal with and I hope he finds a solution soon as the season gets underway.
I believe if Xabi Alonso notices his players are playing individual football instead of team football next season, he will call them into order, and if any player feels that he's too big to follow Xabi Alonso's tactics, Xabi Alonso will have no option but to drop that particular player from his squad and use the player who will listen to him and fit in with his tactics.