Michigan Wolverines footballjunior tight end Colston Lovelandleft last weekend’s 28-18 win over Arkansas State with an apparent left arm injury, after hauling in 3 receptions for 30 yards. Head coach Sherrone Moore said Monday that his prognosis wasn’t as bad as originally thought, but his status for Saturday’s Big Ten opener against USC remains in doubt. Tight ends coach Steve Casula didn’t go into specifics when asked if Loveland — who leads all tight ends nationally with 19 catches — has been practicing so far this week. “Everybody in our program that’s not dealing with a season-ending inju…