The Facts: Former Raiders OC Greg Olson is returning to Jacksonville. NFL Network's Ian Rapoport reported on Tuesday night that the Jaguars are hiring Olson to run their offense, per a team source.

Diehards Line: Olson was cut loose in Oakland with the rest of the Dennis Allen-Tony Sparano coaching staff. His fate was sealed Monday when new coach Jack Del Rio chose Bill Musgrave as offensive coordinator. Olson was assistant head coach/quarterbacks under Mike Mularkey back in the 2012 season. His stock is on the rise after guiding Derek Carr to an impressive rookie season. Olson will be charged with developing Blake Bortles after the No. 3 overall pick in the 2014 NFL Draft showed wonky mechanics and questionable decision-making in 13 up-and-down starts. As NFL.com's Chris Wesseling suggested, it's important the Jaguars turn the franchise around in 2015, so Bortles isn't stuck with yet another coach in his third season. That said, after the Raiders and Jaguars ranked 31st and 32nd in the league in yards and points last year, it's fair to wonder how big an upgrade Olson is over predecessor Jedd Fisch.