My early three would be Southampton, Brentford, Forest.
I think Ipswich will do quite well. Sides that have come up from league 1, to the Championship and then straight into the Prem tend to survive their first season comfortably on the back of a tight knit momentum that a successful side has. They could even pick up a top half finish, or higher lower high half. I think Brentford are starting to run out of energy and although they have some good players still and an excellent manager I think Toney will be a sore point for them given that he's running a contract down, and the internal goodwill will give way to a strained relationship amongst the group.
I don't think Southampton have enough. They were poor when they went down and haven't significantly improved. Season starts in what? A little over two weeks, they haven't got the squad to survive.
The last place is difficult - I think Leicester do have the squad to survive and (I actually predicted their relegation on here early on when they did go down), their relegation was as much to do with themselves and sleep walking downwards. Bournemouth won't have as good a season as last year, and I think Fulham may struggle. But I think Forest will be the one's to go.