Many people talk that Vidal is playing on an inferior league, forgetting than dinho cames from Ukrainian's shakstar, for them a tip: Vidal started his European journey at Germany and played so well there than Bayern wanted him and he turned them down and decided go to Juve.
here in Chile we see the serie A as a strong league, because of that go to Italy instead stay at Germany doesn't look so strange and don forget that Tevez went to Juve also :)...
I think Vidal is more than dinho but I don't see him playing for man city, he is becoming so important at Juve than a transfer looks very improbable.
anyway sorry for my English, greetings