I pretty much have zero expectations because his record for the past 4-5 years has been extremely poor. As I've said before, he's very similar to Joselu who had stints at Newcastle and Stoke. At his 'best' Joselu could come off the bench and be a bit of a nuisance. Baston like Joselu is tall, can do the target man stuff and is pretty good in the air, especially in the opposition box attacking crosses. I don't think Baston's hold up play is better than Davis, but I do think he'll be that bit more of a goal threat.
Ultimately he's here for backup, my preference would have been a forward to come in to really be fighting to start, however January is a rotten time to buy, we really did fail in the summer in this respect. I would not at all be surprised if Baston is released in the summer but if he can defy what are a pretty low set of expectations then that would be fantastic.