I am not a big fan of passing judgement on someone till I know the full context of the story or I get to hear from the person, that's why I still don't see garnacho as a player with a terrible attitude. What I sense about him from afar is that he loves winning and as we all knows, a winner will mostly get upset and sometimes throw tantrums anytime he wasn't able to win base on the lapses or incompetence of his team mate, so I don't necessarily think that what happened between garnacho and the Manchester united manager will ever repeat at Chelsea because he is definitely going to be below the perking other as far as this season is concerned, but if he truly have an attitude problem, he will not even play up to two seasons at Chelsea because they have zero tolerance for bad attitude unlike Manchester united that lets so many things slide.
That means you're not following Manchester United as a whole, and you also don't know what happened in the Manchester United squad last season. There's no way you can hear directly from the person because we're not connected, and we should be able to see some news and developments on each player through the official Manchester United website itself. The accuracy of the information doesn't guarantee a problem, because we're not just looking for the truth about the player's behavior, but also looking at it from a different perspective as a football fan. He's selfish, and like some players who have problems, their emotions can sometimes explode uncontrollably. I agree he has the best ability, but a great player must be able to control his emotions and follow every instruction from the coach. The selfishness of some Manchester United players was very apparent last season, and most of them weren't able to work well with their teammates. If you think he could be better at Chelsea, then we hope that happens.