Before becoming the Ducks' head coach, Helfrich was their quarterbacks coach and offensive coordinator from 2009-12 under Chip Kelly.
Nagy's strong early work in assembling his staff is a likely byproduct - and beneficial one - of being the first of six clubs to hire a head coach this offseason.
The move comes one day after Chicago hired Harry Hiestand as its offensive line coach as part of the team's staff under new coach Matt Nagy.
Helfrich has not worked in the National Football League but has spent time as an assistant under Kelly and current Tampa Bay Buccaneers coach Dirk Koetter. It's a system different from Nagy's modernized West Coast offense. He interviewed for the Bears' head-coaching job in the wake of Fox's firing, but the Bears clearly were intent on hiring an offensive-minded coach.
OR owed Helfrich an $11.6 million buyout.
Cubs Avoid Arbitration With Wilson
Only reliever Justin Grimm remained unsigned among the Cubs' players eligible for arbitration as of late Friday afternoon. In hopes to avoid Theo Epstein's first arbitration hearing since taking over as President in 2012.
Bitter cold expected Friday; wind chill could drop to minus 10
It was the deep freeze during the last week of the month that really lowered the average temperature to levels far below normal. Mostly cloudy skies with areas of dense fog can be expected tonight as temps hold or rise to the upper 30s to upper 40s.
Former Cleveland Mayor Registers To Run For Ohio Governor
Dennis Kucinich plans to formally announce his candidacy for governor of OH next week, Fox News has learned exclusively. Kucinich ran twice for the presidency and served eight terms in the U.S.
Helfrich will not be calling plays initially, but he will inherit a second-year quarterback in Mitchell Trubisky.
Tabor had been in the same position with the Browns since 2011 and had previously worked as assistant special teams coach for the Bears in 2008-'10 under the watch of coach Lovie Smith and special teams coordinator Dave Toub. He returns to the Windy City after serving as an offensive assistant with the Bears from 2007-09. The lines of communication have remained open and clearly Fangio requested time to make a decision.
Fangio, the former defensive coordinator at Stanford and the 49ers under Jim Harbaugh, re-signed Friday to continue to lead a defense he helped transform the past three seasons. With the Lions, Cardinals, Giants and Colts yet to hire a head coach, Fangio appears to be waiting patiently to see what's next.