AFC West notes

Luis Castillo’s days are numbered in San Diego. The Chargers have long decided to move on from him. Expect the Chargers to add to the defensive line in free agency and in the draft. If Castillo doesn’t get another deal and the Chargers don’t upgrade, they could try to bring him back down the road.

The Denver Post links Arizona State quarterback Brock Osweiler and Oklahoma State quarterback Brandon Weeden,

The Raiders' offensive coordinator, Greg Knapp, has an advantage when it comes to looking at quarterback talent at the combine.

In an Insider piece, Adam Schefter’s mailbag looks at the Chiefs’ chances of landing RG3 and Denver’s plans at quarterback.

Here’s another indication Michael Bush will not be in Oakland any longer.