For me the main thing is that Emery keeps saying he's happy with him and he's training well and is just taking some time to get up to speed with how we play and what's expected of him. He might be lying but I personally choose to believe him (because I think he's earned that trust).
But if it
were the other one - I don't think he'd say anything different. I don't think he's going to say in an interview "actually, turns out he's not right for us after all so we're avoiding playing him so we don't have to buy him". It makes everyone involved look like twats, so no benefit comes from saying so.
Ultimately - we're clearly not playing him because of this ten game thing in the contract. It's either that
do want to sign him but want to push the signing into a new calendar year or that we
don't want to sign him so we're making sure he never hits ten matches.
Not wanting to sign him logically tallies with him not making the bench ahead of youth team players. Wanting to sign him but just a bit later than originally planned, doesn't in my opinion. If we see him as a part of our future from January 1st, why isn't he there instead of Hemmings?