If the Detroit Lions ever find a taker for Ameer Abdullah in a trade, they'll have a ready-made replacement on the practice squad.
The Lions signed Donnel Pumphrey to a practice-squad contract on Tuesday, NFL Network reported, adding an extra layer of insurance to their crowded backfield.
Abdullah, the Lions' starter at running back for most of last season, made the initial 53-man roster as the team's No. 4 running back over the weekend, but his name continues to percolate as a trade candidate.
The Lions have LeGarrette Blount and Kerryon Johnson as their top two running backs, and Theo Riddick as a passing option on third downs.
Pumphrey, a fourth-round pick by the Philadelphia Eagles last season, was waived during the roster cut to 53 players on Saturday.
He missed all of last season because of a hamstring injury, but ran for 2,133 yards in his final college season at San Diego State and is the NCAA Division I career leader in rushing yards (6,405).
Pumphrey, who also missed time this preseason with a hamstring injury, was one of a handful of players due in for a workout with the Lions on Tuesday.
The Lions open the regular season Monday night against the New York Jets.