If IW wants to come back, you take him gladly. As would most power conference teams. Even if he isn't a starter (and here if Akok takes his role from him great, but no one can count on Akok coming back better that IW).
I can't imagine Josh wanting to come here as a pure back up Center ----make money overseas or go to GW or UNC Wilmington and start and score double figures -- but if he does, assuming we lose IW, great. The odds that we get a transfer big ready to come here for 8 to 10 minutes a game who is better than Josh are really low.
Mixed views on Tyler Polley. If he is who he is, and we're sure Akok will be like freshman Akok next year, I'm not sure we can't do better. On the other hand, most people here don't seem to give credit to three things: (i) he did shoot over 40% from 3 on fairly high per game volume last year before the injury; (ii) players who blow out their knee sometimes aren't their best the first year back, but are still struggling for confidence and might be better the following year; and (iii) for all his faults, he was Big East 6th Man of the Year and while he may have been overrated coaches obviously thought he was an important role player. My guess, however, is that if he plays another year of college ball, he will want to be a starter somewhere.
But I have nothing beyond common sense behind any of those.