The 21-year-old Bitsko was found unresponsive in the bedroom of his off-campus apartment on Wednesday morning. The school says police believe he passed away from an undetermined medical issue.
Haynes said Thursday that Bitsko's death is a tragic loss and that his players will get through the situation together.
Bitsko was in his fourth year with the Golden Flashes and was slated to start at center. He started all 12 games in 2013.
The school has said it is providing counseling services and support to student-athletes and athletic staff.