According to Cleveland.com's Mary Kay Cabot, McAdoo is in Cleveland "interviewing for an offensive position."
Cabot added: "Stefanski has yet to hire an offensive coordinator, so that role is still open. He also hasn't determined yet if he'll call his own plays."
Stefanski was hired as the Browns head coach this month to replace fired Freddie Kitchens after the first-year head coach went 6-10 in 2019. The 37-year-old held various coaching positions for the Minnesota Vikings since 2006 and most recently served as their offensive coordinator in 2019.
McAdoo also interviewed for the Jaguars offensive coordinator job last week, per NFL Network's Ian Rapoport, but Jacksonville announced that former Washington head coach Jay Gruden got that position on Wednesday.
The Athletic's Joe Person reported on Jan. 16 that McAdoo interviewed with the Carolina Panthers for a "staff position" under newly hired head coach Matt Rhule. Person later clarified that McAdoo interviewed for the Panthers' open quarterbacks coach position.
McAdoo last served as the Giants head coach in 2017. New York parted ways with him after a 2-10 campaign. The 42-year-old served as the team's offensive coordinator for two seasons (2014, '15) before being promoted to head coach in 2016.
The Giants went 13-15 with one playoff loss under McAdoo.
Keith Britton of 92.3 The Fan pointed out McAdoo's connection with wide receiver Odell Beckham Jr. "McAdoo was certainly a fan/supporter of Odell," Britton noted. Beckham was drafted 12th overall in 2014 by New York, where he played until he was traded to Cleveland last March.
Whoever takes over as the offensive coordinator for the Browns will be tasked with improving a unit that ranked 22nd in total offense and passing offense as well as 12th in rushing offense last season.