Manchester United will win the Champions League based solely on the fact that the Premier League is more or less locked up, so they will have time to rest players.
Even if they need to make a sub for injury or what have you, they have still have Park, Saha, Giggs, Brown, Anderson, or Fletcher; all of whom have proven themselves priceless in substitutions through a season full of injuries.
And don't forget Neville and Carrick are due back from injury. Like I said, it is more or less in the bag now. All we need is a Golden Boot for Cristiano Ronaldo and the season will be perfect, or the closest it can get without the FA Cup.