I will certainly not boo him. He did give us his all last season and that helped us win the nba championship.
I might clap, but I certainly will not get a hoarse throat. I met James at a signing (that only lasted like 2 hours, so being tired or bored isn't an excuse) and he didn't seem to care to be there at all, completely uninterested in meeting his fans. Then he left for more money, which I cannot say for sure that I wouldn't do myself. But the bottom line is: I can't emotionally cheer for a player who obviously doesn't have genuine emotions for this team. I'll save my throat to cheer for the players who it means something to be a celtic.