BARCELONA (Reuters) - Barcelona coach Ronald Koeman was in a resigned mood after his side were outclassed and beaten 3-0 by Bayern Munich in the Champions League on Tuesday, saying fans needed to be realistic about the team's current plight.

A deflected goal from Thomas Mueller gave Bayern a deserved lead in the first half before Robert Lewandowski struck twice after the break to inflict another painful European defeat on Barca after thrashing the Catalans 8-2 in August last year.