Its not rumors that 3 clubs he been at either manager or teammate complained about his professionalism we maybe not seeing that on pitch but in training or team meeting.Why are people talking about him having a terrible attitude when there is nothing to suggest that to be the case? Sure they read an article somewhere about a past coach's opinion on him but that doesn't make the content true nor does it reflect his current mind state.
People really should refrain from participating in useless gossip.