Former Pitt star Sam Young had a rough season last year. His playing time shrunk considerably with the Memphis Grizzlies and he was later traded the Philadelphia 76ers. His team made the playoffs, but he didn't have much of a role.
Young showed good promise in his rookie year and then fell out of favor in Memphis. The Philadelphia trade wasn't a huge surprise, but he failed to make an impact there, either. He'll probably really need to make an impact this summer to stick.
Still, it's premature to say his career is spiraling downward and since he's still pretty young, he has plenty of time to be an effective player in the NBA.