Won't be a problem next season, most likely.
Green, SGA, Washington, Killeya-Jones, and Wynyard should return. Gabriel and Vanderbilt are possibilities to return as well (assuming Vanderbilt doesn't return 100% healthy), though I think Gabriel bolts regardless of draft position.
Cal said he is signing 4-5 in this class. Has three already, he will sign 1 or 2 more.
Expect to lose 4 or 5, since we will sign 4 or 5. Knox and Diallo are givens. Richards is very likely. Gabriel probably leaves. I think Vanderbilt plays enough at the end of the season that he gets drafted.
We will probably see 2 returnees starting minimum next year, plus 2-3 more as key players off the bench.
I see Johnson and Quickley as potential starters, plus Williamson (if he comes here).
Herro will be a reserve, most likely.
Best case scenario recruiting wise is we sign Williamson and Wiseman reclassifies.
Starters
G Green or Gilgeous-Alexander
G Quickley
F Williamson
F Washington
F Wiseman
Bench
G Gilgeous-Alexander or Green
G Baker
G Herro
G Johnson
F Killeya-Jones
F Wynyard