INDIANAPOLIS -- If running back DeMarco Murray decides to sign with another team outside of the Dallas Cowboys, it won’t be with the Indianapolis Colts.

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At this point, the Colts are not interested in signing Murray, last season's leading rusher in the NFL, according to a source.

Murray is the league’s top free-agent running back after he rushed for 1,845 yards behind the league’s best offensive line in Dallas last season.

The Colts are in need of a running back to pair with quarterback Andrew Luck after they finished 22nd in the league in rushing last season.

Baltimore’s Justin Forsett, New England’s Shane Vereen and San Francisco’s Frank Gore are other running backs available on the free-agent market. The Colts also like the depth of the running backs in this year’s NFL draft.

The Colts took a step toward improving their offensive line when they agreed to a deal with veteran Todd Herremans on Sunday.