They have 6 roster slots on the 40 man, and depending on us trading JBJ (or other), we might have a couple more.
As for the 26 man roster, I see only 18 sure bets with one being Lin by default.
Sale, Price, ERod, Eovaldi, DHern
Workman, Barnes, Taylor, Walden
Vaz
Chavis
Lin
Bogey
Devers
Beni
JBJ
Betts
JD
That's basically 8 slots open, not counting a likely JBJ trade. Add Hembree, Velazquez & Brasier or some other in-system RP'er, and we still have 5 slots:
1B
2B
OF
SP
Rule 5 guy or another SP'er