As it stands it looks like the UCLA Football team will have had their last two big time QBs leave before their senior seasons. Former UCLA QB Brett Hundley left as a red-shirt junior and all the signs are there that true Josh Rosen will head to the NFL after the 2017 season.
He’s openly stated that he doesn’t agree with current NCAA policies about amateurism and even his interviews with the media seem slanted towards him leaving.
His departure isn’t 100% guaranteed however.
Across town USC QB Sam Darnold could enter the draft as well but he still has two seasons of eligibility remaining after the 2017 season.