UPDATED: Kennedy Polamalu Out at USC

Updated at the end...P

Kennedy Polamalu is out at USC. The Trojans offensive coordinator (in title) and running backs coach will not return next season, according to USCFootball.com.

The move comes just two days after National Signing Day when USC signed five-star running back Ty Isaac of Joliet, Ill. and comes on the heels of the January enrollment of four-star RB Justin Davis.

While he was not the play caller, Polamalu had a large influence on the game-planning for an offense that underachieved in 2012.

The unit finished ranked No. 41 in total offense with 432 yards per game, but didn't live up to the expectations after quarterback Matt Barkley returned for his senior season and Penn State transfer Silas Redd joined a list of playmakers that included two potential NFL tight ends, a 1,000-yard rusher in Curtis McNeal and two potential first round draft picks in wide receivers Marqise Lee and Robert Woods.

Polamalu becomes the fourth departure on the coaching staff, joining Monte Kiffin, Scottie Hazelton and Marvin Sanders. Kiffin resigned and took the Dallas Cowboys defensive coordinator position shortly after. The Trojans' linebackers coach, Hazelton, moved up to a defensive coordinator position with Nevada while Sanders was let go after the hiring of defensive coordinator Clancy Pendergast.

A former USC fullback, Polamalu, had just completed his third season of his second coaching stint with USC. He also was on staff from 2000 to 2003 before departing for the NFL where he spent time with the Cleveland Browns, Jacksonville Jaguars and Tennessee Titans.

UPDATE: Kiffin makes it official.

"As we continue to evaluate all facets of our program, including the organization of our staff, we made the decision to go in a different direction at this coaching position. Kennedy Polamalu is a good coach, a good person and a good Trojan. We wish him and his family the best."

Seems a bit cold to me...