IRVING, Texas -- In another sign that offensive coordinator Bill Callahan could call plays for the Dallas Cowboys in 2013, the team announced Frank Pollack as their new assistant offensive line coach.

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Wes Phillips will coach tight ends after serving the last two seasons as assistant offensive line coach.

Pollack was Oakland’s offensive line coach in 2012 and played for Callahan at Northern Arizona. From 2007-11, he was the assistant offensive line coach for Houston, and he had a nine-year career as a player, including two stints with San Francisco (1990-91, 1994-98) and a two-year run in Denver (1992-93).

The addition of Pollack gives the Cowboys a veteran coach with ties to Callahan to oversee offensive line meetings while Callahan is in passing game meetings.

Phillips takes over the tight ends position from John Garrett, who left after six years to be Tampa Bay’s wide receivers coach. Phillips, the son of ex-Cowboys coach Wade Phillips, has been with the team since 2007, moving from offensive quality control coach to assistant line coach to tight ends.

Jason Garrett has called the offensive plays for the Cowboys since 2007, but owner and general manager Jerry Jones has indicated there will be a change and many believe Callahan will take over. Callahan was named offensive coordinator last year, but Garrett continued as the playcaller. Callahan has not called plays in the NFL since 2003 when he was Oakland’s head coach and running the West Coast offense.