It's unlikely he will go now. If he does, I'd be sad and a little angry that he chose to leave in such circumstances. If he stays, I hope he gets sat on the bench for a few games as punishment, hell if we keep banging them in and winning without him, it might even make him a better player to compete for his place...but I won't be booing or holding a grudge.
Football is fickle these days and to want to play for Barca is not exactly an insult to Liverpool, let's be a little pragmatic. He's done a lot for us, he's never complained and given 100% every time I've seen him and all his done is express a desire to play for one of the top 5 teams in the world. He hasn't been disrespectful in my opinion, just a little naïve in the way he's done it.
But he'll probably stay and I hope the fans cut him some slack, because he can make a huge contribution to a big, big season for us.