Newly minted Raiders head coach Pete Carroll would like a mixture of coaches on his staff. That is to say some he knows, some he doesn't, and some returning from the Raiders current staff. He's already working on bringing in coaches who have been on his previous staff,

It’s important to understand that when your Pete Carroll is asked a question, he’s going to tell you what he hopes will happen.’

Patrick Graham had several suitors this offseason. Including Raiders head coach Pete Carroll. Thus the Raiders get their top assistant back.