Not in favor of him playing too defensively either which is why i said i wouldnt mind him playing the way fletch did. As a proper box to box CM. He can do that role i feel as it doesnt need him to be positionally aware at all times and to hang back to keep things tight defensively.
He's young, he'l learn from playing. If you partner him with Carrick, you can afford him to make a few mistakes. Play him as the holding mid, and his naivety at times can cost the team a lot. With Carrick as insurance behind him, it wouldnt be that much of a concern.
Jones has a good engine, makes good powerful forward runs and has the energy to play at both ends of the pitch.
Am not saying we should convert him into a CM, mind, just that if he's played there, it has to be alongside Carrick, not in place of him.