straight to your inboxLionel Messi wants to leave Barcelona and his shock decision has opened the door to a potential transfer to Manchester City.Messi has spent his entire career, and was expected to retire, at Barcelona but frustrations with how the club has been run in recent years have finally come to a head following the club's embarrassing 8-2 defeat by Bayern Munich in the Champions League.It's not yet a guarantee that City will make the move as Pep Guardiola has always insisted he wants