Like you said Vidal is a nice squad player, but i won't trust him against good competition, unlike Chessio he seems to fade away whenever we are struggling. In another terms, he isn't clutch.
He seems to be a hot head too, reminds me of Melo.
Vidal needs to look up to Marchisio, i'm sure Cheesio will have no problem giving him tips on how to develop some of the aspect of his game.