The Raiders will officially announce the hiring of Jon Gruden at a press conference on Tuesday, ESPN's Adam Schefter reported.
The contract will be worth around $100 million over 10 years, according to Schefter.
Jason La Canfora of CBS Sports reports that a good deal of Gruden's staff is already in place, though Reggie McKenzie will remain the team's general manager. Greg Olson will be Oakland's offensive coordinator, Paul Guenther will be defensive coordinator and Rich Bisaccia will coach special teams, La Canfora reports.
Gruden last coached in the NFL in 2008 with the Buccaneers, whom he led to a Super Bowl title in 2002.