Dark rain clouds constantly hover above the Raiders offense these days. There’s only talk of doom and gloom. The unit hasn’t come close to realizing great expectation, and while nobody’s publicly playing the blame game at the Raiders complex, this offense is chiefly responsible for a disastrous 6-9 campaign with Sunday’s road game against the Chargers in Carson left on the docket. Focus shifts beyond that meaningless game towards a pivotal offseason where key decisions must be made. One will center on offensive coordinator Todd Downing, a young offensive mind who has struggled in his first year running the Raiders attack. It’s getting harder to imagine him being retained after this year, to the point it’s likely the Raiders will be looking for a new offensive coordinator this winter. Head coach Jack Del Rio was asked about Downing’s performance this year during a Wednesday press conference. He didn’t offer a vote of confidence, but he didn’t push Downing under the bus.