Osuna's fate was sealed the moment he made the team out of Spring Training. He just spent an entire season as a reliever and reached a career high in innings in the process with around 80 counting the playoffs. The only way he's a SP next season is if they are willing to demote him to AAA so he can stretch out. Otherwise he was always a lock for the pen. AA f***ed him up.
if Sanchez has a career at all in the Majors it will be as a reliever, so unless he's traded, the Jays are doing the right thing by keeping him in the pen. Unfortunately, Gibbons thinks he's Betances, so that's not good.