Michael Bush signs with Cardinals

AP

The Cardinals have added a veteran running back to their roster for the final five weeks of the season.

The team announced on Tuesday afternoon that they have signed former Raiders and Bears tailback Michael Bush. They released Kerwynn Williams to open up a spot on the roster.

Bush has not played for anyone since the Bears released him in March after two years with the team. He ran for 608 yards and eight touchdowns on 177 carries during his time in Chicago. His best season came in 2011 with the Raiders, who drafted him in the fourth round of the 2007 draft, when he ran for 977 yards and seven touchdowns.

The Cardinals haven’t found a reliable No. 2 back behind Andre Ellington this season and Ellington’s production has sharply declined over the last few weeks. He’s run 47 times for 89 yards in the last three weeks to go with 14 receptions, which makes the interest in a productive backup an easy one to understand. Bush’s work the last two years wasn’t overly impressive, but it wasn’t any worse than what Arizona’s gotten this season.