Hall could make his debut against Liverpool at St James’ Park on Sunday (kick-off 4:30pm) but Howe warned the player will need to settle in.
“Yeah he’s fit and in contention. He’s obviously done minimal training,” said Howe. “Short term aim is to develop to us, and what I mean by that is mold his game around what we want him to do and that’ll take a period of time.
“Ideally with your signings, you try and get them in as early as you can during pre-season and I think we’ve seen the benefits of that with someone like Sandro Tonali, who’s come in and adjusted to our way quite quickly.
“Although there is a lot more to come that period has been very beneficial. Lewis will have to go through a similar period where he totally understands what we need him to do.”