Reggie Bush hasn’t returned punts on a regular basis since his final season in New Orleans, but the Lions’ running back said this past week that he was ready to resume those responsibilities if his new team needed it this fall. “I’ve done it before, and I don’t mind it,” Bush said. “I can still do it if I need to and if they want me to do it.” The Lions are looking for help on special teams after fielding one of the worst return units in the NFL last season, when they ranked 31st in kick-return average and 22nd in punt returns. They entertained the idea of adding two-time Pro Bowl selection Josh Cribbs, who signed with the Raiders recently, and have been auditioning return men throughout the off-season. Bush was one of a handful of players to field punts during Wednesday’s open OTA practice. Mike Thomas, Steven Miller, Patrick Edwards and Terrance Austin also worked at the position, and coach Jim Schwartz said last month that second-year receiver Ryan Broyles, recovering from a torn anterior cruciate ligament, could be an option there as well.