Sources: Clinton Portis, Redskins over

Washington Redskins running back Clinton Portis' release is imminent -- likely tomorrow, a league source told ESPN NFL Insider Adam Schefter.

Despite another injury-plagued season, Portis still considers himself an elite running back.

"I know I got good football left in me," Portis told reporters on Wednesday. "I think being fresh, having been really in the last two years not having a lot of contact, I think the two injuries -- going out with a concussion, and then the torn groin -- was really fluke injuries. I don't think that's a wear and tear, like, 'Oh his body broke down.' I think that was just fluke injuries."

Portis, who has spent seven of his nine years in the NFL with the Redskins, played in only five games last season, rushing for just 227 yards and two touchdowns.

Portis will be 30 next season and he's owed more than $8 million.

ESPN.com NFL reporter Matt Mosley contributed to this report.