I would trade Maroney for a third round pick in this year's draft.
Oakland, Philadelphia and Cleveland own two third round picks. Philadelphia seems like the logical choice to initiate conversations with.
The only other teams selecting in the third round who could've an interest in Maroney, if he's available, are Houston and San Diego.
Note: Some of these players could be released which would place an emphasis on selecting a running back in the draft for that team.
Team's current running backs
Oakland - McFadden, Fargas and Bush
Philadelphia - McCoy, Westbrook (role and future with team uncertain) and Buckley
Cleveland - Harrison (FA), Davis and Jennings
Houston - Slaton (underwent surgery, out indefinitely), Moats, Foster, Henry and Johnson
San Diego - Sproles (FA), Tomlinson (role and future with team uncertain) and Bennett