It is very sad because I think its the same injury he had in first 2 weeks of season. Guys are banged up this lockout season.
Ray Allen is also not looking good for 1st round.
And If I'm Chicago, even if he can play 2nd round(I expect CHicago to still beat Philly) I say shut him down. He's 23 years old and the main core guys are 26-28 years old.