The Arizona Wildcats have lost two of their most popular assistants to a soon-to-be Pac-12 Conference rival.

Co-defensive coordinator Greg Brown and defensive tackles coach Mike Tuiasosopo both accepted positions at the University of Colorado, a UA spokesman confirmed Wednesday. The coaches told their McKale Center colleagues about their new jobs; head coach Mike Stoops, who is out of town, was informed by phone.

Neither Brown nor Tuiasosopo are expected to coach in the UA's Dec. 29 Alamo Bowl against Oklahoma State.

It's not immediately known which positions Brown and Tuiasosopo will fill on Colorado coach Jon Embree's new staff. The Boulder (Colo.) Daily Camera reported Wednesday that Brown will likely be tabbed as the Buffaloes' defensive coordinator. Tuiasosopo has coached the defensive line since joining the college ranks at Utah State in 1996.

Reached Wednesday night, CU spokesman Curtis Snyder said the university is expected to introduce all new assistants as early as Monday. The Buffaloes will wait until then to make the hires official.

Embree, who was introduced Monday, has already retained linebackers coach Brian Cabral and hired Eric Bieniemy away from the NFL's Minnesota Vikings to serve as his offensive coordinator. Cabral served as the Buffaloes interim head coach for three games this season after Dan Hawkins was fired.

The hiring marks a homecoming for Brown, 53, who coached at Colorado from 1991 to 1993 and 2006 to 2009. Brown was hired by Arizona last January to replace Mark Stoops, who left for Florida State. Brown shared defensive coordinator duties with former linebackers coach Tim Kish this season.

Tuiasosopo, 47, has been a key to the Wildcats recruiting success of Polynesian and Hawaiian players.

He and Embree are close friends.

Stoops, meanwhile, is scheduled to appear at an Alamo Bowl news conference today in San Antonio. He and Oklahoma State coach Mike Gundy will meet with the media at 9:30 a.m. The Wildcats (7-5) will return to practice Friday.



• What: Arizona (7-5) vs. Oklahoma State (10-2)

• Where: San Antonio

• When: 7:15 p.m. Dec. 29