sentences:  Popp continued leading the Alouettes during the 2007 season as well, a rebuilding year which saw the team play with 23 rookies and without their starting quarterback for half the season.Following the 2007 season, Popp decided to step away from the coaching ranks when he hired former NFL coach Marc Trestman as the new head coach of the Alouettes.On August 1, 2013, Popp returned to the sideline after Owner Robert Wetenhall decided to fire new head coach Dan Hawkins and was interim head coach for the remainder of the 2013 season.