I'm assuming Stewart is for free since his contract begins when his Hull contract finishes (ignoring the played for 2 clubs already rule)? If so bargain, we're very good at turning players around who look to be throwing away there talent (Gradel, Snodgrass, Diouf, Somma etc) if not so what? He's for free. Judging possible reward (i.e him becoming one of the top young wingers in the Championship worth £4m+) vs possible risk (find out he's duff within a full season and half and waste say couple hundred k worth of wages) I think it's a smart investment.