I'd expect Ethan Ross to go but I wouldn't be surprised to see the rest remain.
We can register up to 22 players, but we don't include GKs or under-21s in that 22, so that'll cover a good chunk.
Don't need to be registered: 6
Ethan Ross Bobby Jones (assuming he's signing his new offer) Ben Hinchliffe Jordan Smith Ethan Pye Ashton Mee
Need to be registered: 20
Macaulay Southam-Hales Ryan Rydel Fraser Horsfall Neill Byrne Kyle Knoyle Ibou Touray Akil Wright Ryan Croasdale Will Collar Antoni Sarcevic Myles Hippolyte Callum Camps Connor Evans Paddy Madden Kyle Wootton Tanto Olaofe Jack Stretton Ollie Crankshaw Nick Powell Billy Chadwick
That's only 20 out of 22, so there's still room for 2 more.
We're unlikely to register Stretton either, due to his injury, so you could arguably add 3.