The Raiders will introduce Allen as their new head coach during a Monday news conference schedule for 3 p.m. ET, though he has likely already started putting together his staff.
Lombardi: Products of environment
Which new head coaches have the best support systems? Michael Lombardi examines each situation. More ...
Late owner Al Davis traditionally gave Raiders coaches two-year contracts with options. When Davis died in October, his son Mark took over the team.
The Raiders have gone nine straight seasons without a winning record or a playoff berth, just missing out on the AFC West title on tiebreakers with an 8-8 record last season.
The Associated Press contributed to this report