Black is expected to announce the same later Tuesday.
"Tarik has decided to transfer," Pastner said. "I'm so proud of him graduating in the spring. We wish him nothing but the very best. I'm at peace with it."
Once considered the possible "face of the program," Black, a Memphis native, averaged a career-low 8.1 points and 4.8 rebounds in a career-low 20.8 minutes this year, mostly because he was almost as likely to get a foul as he was a rebound while on the court despite the fact that he's 6-foot-9, 260 pounds and athletic.
Pastner told CBSSports.com he has "no idea" where Black will transfer. The only restriction on the former top-50 recruit is that he will not be released to any school on the Tigers' schedule, Pastner said.