FORT COLLINS, Colo. (AP) — Colorado State University has signed a 15-year, $37.7 million naming rights agreement with Public Service Credit Union for its on-campus football stadium.

The stadium is yet to be named because the agreement for title sponsor of the year-old stadium is part of an overall rebranding initiative and public rollout of a new name.

Combined with the $20 million anonymously donated to the school in 2016 to name Sonny Lubick Field, the total naming rights revenues of $57 million is among the largest in college athletics.

The $225 million stadium opened last season, bringing Rams football back to campus for the first time in 50 years. The Rams set an attendance record of 192,369 fans, with an average of 32,062. Season ticket sales increased 40 percent to about 15,500.