Lions agreed to terms with RB Reggie Bush, formerly of the Dolphins, on a four-year contract.One of the worst kept secrets of free agency is no more. Bush provides some desperately needed big-play ability to a running back corps that simply didn't threaten defenses last season. Yahoo's Jason Cole has reported the Lions are hoping to make Bush a "full-time," three-down back. That could be a dicey proposition for a player with Bush's injury history, but he'll undoubtedly lead the Lions' backfield in touches so long as he stays healthy. An elite pass-catching back joining the league's most pass-happy offense, Bush is going to have a monster PPR ceiling in 2013. We would call Bush the favorite to lead all NFL running backs in receptions this season.