Would having Patrick Graham be head-coach successor a good idea?

Now, that Patrick Graham has been retained by new Las Vegas Raiders coach Pete Carroll as the defensive coordinator, there has been a lot of discussion and speculation that perhaps the Raiders and Graham have a deal that he will be the successor to Carroll as the Raiders’ next head coach whenever that may be.

The notion is understandable and believable. But, it’s also premature and unnecessary.

The Raiders don’t to have a form plan for the post Carroll era yet.

From listening to Carroll — who will be the 74 in September and will will be the oldest NFL head coach in history in his first game as the Raiders’ leader — it is clear he is not focused on when he is going to leave this post. He has a…