Somehow personally I dont see this rumour as true. For ronaldo to leave man utd would be a step backwards and Alex ferguson certainly hardly makes any mistakes when it comes to players... unless of course if they are unsettled.
Viera is linked to almost every club, I read in teh sunday mirror today that Juventus will definetly get rid of him this season and that a stack load of clubs, most notably real, man utd e.t.c are after him. Personally this move wont benefit us and neither will it benefit man utd. Cristiano ronaldo is like the camoranesi for us he is one of the top assisters but only difference being he is someone not disliked whatsoever by the fans in fact rather the opposite.
The more realistic names for man utd and ones which have been reported week in week out are the following:
Diarra, Mascherano, Arteta, Carrick, Duscher, Reo coker and Jean makoun. These are the most likely names that will try to bolster the central part of man utd's weak midfield. Viera for them is really not much of an option infact its hardly been mentioned in the english press, I see it as a very unlikey case unless of course if we gave him to them for pennyloads. As for ronaldo leaving man utd, thats virtually impossible.