Also Rodwell has done nothing to jump back into the side. He is 100% not a replacement for Fellaini. We'd just go back to the start of the season again if we start with the experiment of him in the middle. The only games I think Rodwell has been up to it are the Europa ones, he isn't ready for the Premiership.
Lets just hope Fellaini gets back in a hurry. The next best option I'd probably have to say would be Neville back to the middle.