So Defoe would have been fun, and filled a position of need.....
.....but, er, by my count we currently have exactly four defenders in our squad (unless you count what remains of Mousinho) and one of them is already injured.
Right now, I'd trade Defoe for two solid League One defenders. Because whilst I think we can muddle through with our current striking options, even if the depth isn't ideal - there's no way we make the playoffs if we try and play the second half of the season with one top notch centre half with a dodgy back, one super-talented but super-green CB that's learning his trade, an attacking LB who can't really defend and a Swiss Army knife of a RB that's having a bit of a down year!