I know it's blasphemy, considering his contribution during the "glory days", but I'm not a Turner fan. This team no longer has the most dominant O-line in the league. Nor does it have an Aikman, Irvin, or Smith (we do, however, have an upgrade at TE).
Now, that's not to say that Turner doesn't have value. I just look at the way that his team snuck into the playoffs in the worst division in football last year (with an 8-8 record, nonetheless) and his team is tied with the Raiders in the win department this year. All with Norv running the offense. The Chargers aren't playing great this season and they're loaded with talent on the offensive side of the ball. If that's all Norv can squeeze out of THAT group, I'd prefer he stay far, far away from Valley Ranch.