Even though Seedorf can keep the ball and can help us with his experience, I think he is very slow and he cannot release the ball fast enough - like Aquilani for example. I think Nocerino must start this game as he has been our most consistent midfielder this season, and he never stops running.
Aquilani - MvB - Nocerino is a must for me. Seedorf can come on around the 70' mark for Aquaman and use his experience then. I read reports that Seedorf will start for sure, and it is between Aquilani and Nocerino for the third spot, I really hope this is not the case.
Prince is a must for me as well, despite his inconsistency and lack of technical play. Height, Speed + Strength is the way forward against these midgets.
As Pato can't play a full game, I would rather start Robinho on the left (to face Puyol who is very overrated) and have him build up play like how Pato couldn't do. With Robinho we will have more pressure on their midfielders, and we will have more possession. Pato coming on in the 55-60' mark and using his full speed against the tired Barca midfielders/defenders will be better than him facing them at the start of the game where they are full of energy. As Barca like to play a very high line of defence, Pato's speed will be very important to penetrate it, I just hope he manages to hold up the ball well and not lose it carelessly on 1on1's like he usually does.
I'm not sure on LB - it seems Zambro will play according to reports. I was hoping for Taiwo since there was no Alves.