What Greg Olson expects from Derek Carr in their second Raiders go-around

Greg Olson (right) and Derek Carr are re-united in Oakland for next season. (Anda Chu/Bay Area News Group)Derek Carr’s first offensive coordinator in the NFL is back with Oakland, and the pair gets a second chance to make it work.

The Raiders started 0-10 in Carr’s 2014 rookie season. Olson was fired later that year after two seasons as Oakland’s offensive coordinator. He’s since served as Jacksonville’s offensive coordinator for almost one and a half seasons and the Rams’ quarterbacks coach for one.

Jon Gruden will call plays for the Raiders, so Olson may be more of a quarterbacks coach than anything. He said Wednesday the staff is still discussing whether to even hire a QBs coach given the…