Henry is unhappy at Barcelona. First of all he has consistently been played out of position on the left wing to accomodate Etoo as the main striker. The fact that Barcelona play a 4-3-3 formation means that this is unlikely to change. Secondly he very much misses his daughter who lives in England. For these reasons I think he would seriously consider Man Utd if the offer was there. Barca also have Etoo, Gudjohnsen and Bojan so it would not be such a loss for them. Barca want to sign Pique, so why not use him in part exchange. I don't have to tell you about Henry's quality, he is a legendary striker. He is only 30 so he still has many years to offer us.