Yes, silly me, I had no idea he was a new player learning his trade. Thank f*** you reminded me!
Yes, obviously he'll get better. I just think he'll need to improve pretty sharply to be at a good enough level where he can be trusted to contribute to our first team. Right now Jones looks like he can come and be useful (and yes, I'm aware he's older), but I think Williams is a liability when he comes in. And I've seen other young players look better in their first few games.
But anyway, we're not signing anyone so presumably we'll have plenty of opportunity to witness how quickly he improves.