Erden won't play this season. The guy can't guard centers. Against Greece, he wasn't able to hold a position in the paint at all, and Schortsanitis was able to push him around at will.
And if we're looking for filler at PF, between the two suspect defenders, advantage probably goes to the one who can shoot. So expect Harangody to log significantly more minutes. Barring anything unforeseen, Erden will be in street clothes most games.