Not yet i'd at least try keep hold until the summer at least. Numerous reasons:
1) Try increase his stock, if he can help us push on for a play off place i think his value will go up a bit more
2) We've already got a small squad, reducing it is not an option
3) Not long enough left in transfer window for Shez to find a good replacement
Although if we dont sell him will he become disillisuioned and stop playing to his potential? (I think he'd be daft to do that)