Fromm is essentially a rookie, as we still don't know what we have in him. We also did invest a 5th round pick in him. Given that Trubisky is here for just one year probably, if Fromm shows promise this pre-season, I would keep him on the roster and not risk him being poached from the PS. Didn't we carry three QB's at some point in in 2018 (among Allen, Anderson, Barkley, Peterman), although I admit we still didn't know what we had in Allen at that time. He's still on a rookie contract, and we have him cheap. If he doesn't show promise, he can battle it out with Webb for the PS spot (assuming Webb is still PS-eligible).