I don't know about the returning players, but I always assumed there would be a lot of turnover this year (I assumed it last year, too, but Goff just went about it the wrong way). With the seniors leaving, plus the ones I have heard weren't invited back,
For sure leaving:
Avant - Sr
Henry - Sr
Short - Sr
Walters - Sr
Alexander - Sr
Adams - Sr
Potentially leaving:
Vance - Jr (Draft)
Taylor - Jr (Draft - I don't see it with how this year went)
Holcombe - Jr (Draft - Again, I don't see it, but I've been wrong before)
Rumored to be not coming back:
Manning - Jr
Kaufman - Jr
Malkin - Jr
Greene - Fr
Duarte - So
Duke - Jr
Sartain - Jr
Since we only carried 31 players last year, that leaves 15 players, so to get to 10 that means there's 5 more we don't know about yet. And that's IF Taylor and Holcombe both turn pro.
TBH, in the "rumored" list, really surprised to see both Malkin AND Kaufman in that list. Also, Greene, considering he's only a freshman. Also, those can be wrong, but that's just what I've heard.