Even though the Washington Redskins have added Larry Johnson and Willie Parker to a backfield that includes Clinton Portis, the team has invited Brian Westbrook for a visit on Wednesday, according to sources.

Westbrook comes highly recommended by his former Eagles teammate, Redskins quarterback Donovan McNabb, who apparently has made his case for the running back since McNabb was acquired by Washington in a trade, a source said.

Westbrook, who was released by the Eagles in February, has passed a physical with the St. Louis Rams, where he also has a familiarity with offensive coordinator Pat Shurmur, a former Eagles assistant.

Westbrook's ailments that have passed physical screenings include knee and ankle injuries, as well as multiple concussions.

The Redskins have the first organized team activity May 17-19; their level of interest in Westbrook is unknown. Dialogue between the two sides has been ongoing.

Chris Mortensen is ESPN's senior NFL analyst.