Man City’s treble-winning captain Ilkay Gundogan joins Barcelona

German footballer Ilkay Gundogan, who recently led Manchester City to a continental treble which included a historic Champions League triumph, will represent Barcelona next season following a free transfer. City won five Premier League titles, two FA Cups, four League Cups, two Community Shields and the Champions League during Gundogan's stint. He scored 60 goals in 304 matches for City.