PHILADELPHIA -- The Philadelphia Eagles waived running back Matthew Tucker with a non-football injury Monday.

Tucker, 24, spent the last two seasons with the Eagles. He was on the practice squad for most of his tenure, but did play in two games as a rookie in 2013.

Tucker’s release may explain an Instagram post last week by Kevin Monangai, a running back from Villanova University. The 5-foot-8, 205-pound Monangai posted that he was signing with the Eagles. At the time, the Eagles’ roster was set at 90, the maximum number of players allowed when training camp opens.

The nature of Tucker’s injury, or when he sustained it, was not disclosed.

The Eagles’ running back situation has changed dramatically this offseason. The team traded LeSean McCoy to Buffalo and withdrew its offer to restricted free agent Chris Polk. Polk signed with the Houston Texans. The Eagles also added free agents DeMarco Murray and Ryan Mathews.

But Kelly was inclined to keep a fourth running back to go along with Murray, Mathews and Darren Sproles. At least that was what he said at the NFL owners meetings in March. Tucker appeared to have a very good chance of being that fourth back before the injury.

Former Oregon back Kenjon Barner and rookie Raheem Mostert, from Purdue, also are on the roster. They will compete with Monangai for the fourth running back spot, if there even is one.

With the release of Tucker, Sproles is now the only running back who was with the Eagles before 2015.