Former Bears coach Marc Trestman returning to the NFL

Marc Trestman was the Bears’ head coach from 2013-14. Marc Trestman is back in the NFL.

The former Bears head coach was hired as the Chargers’ senior offensive assistant Wednesday. He spent the last three years as an adjust professor at the University of Miami School of Law — where he received a degree in 1982 — following a stint as the head coach and general manager of the Tampa Bay Vipers of a failed version of the. XFL.

Trestman went 13-19 in two seasons with the Bears from 2013-14 before being fired in a housecleaning that also claimed general manager Phil Emery. He worked as the Ravens’ offensive coordinator from 2015-16 before becoming head coach of the CFL’s Toronto Argonauts for two…