Assistants scurrying out of Oakland

Posted by ESPN.com's Bill Williamson

Several assistant coaches on Oakland's staff are not waiting to see whether interim coach Tom Cable returns.

Wednesday, both coordinators and a key offensive coach reportedly departed the team.

Defensive coordinator Rob Ryan is reportedly going to join former Jets coach Eric Mangini with the Browns. Offensive coordinator Greg Knapp is headed to Seattle and running backs coach Tom Rathman is headed to San Francisco.

None of the departures is a major surprise. Knapp's and Rathman's departures have been expected for months. Ryan nearly went to the Jets last year.

If Cable is retained, he will have to hire several new coaches. Oakland owner Al Davis has had a short phone conversation with Giants offensive coordinator Kevin Gilbride. There haven't been any other known interviews.