The team could be excited about McCarthy's offensive background to help get the most out of quarterback Sam Darnold.
The 55-year-old coach spent 13 years with the Packers, producing a 125-77-2 record with eight 10-plus-win seasons. He led the squad to a Super Bowl title in 2010 and had 10 playoff wins during his stretch with the team.
He was fired in November after getting off to a 4-7-1 start in 2018.
Considering he had Aaron Rodgers at quarterback, this was a major disappointment and a reason for the Jets to be wary of the hire.
"Coaches hit walls, too," a league source told Cimini. "He should be the first guy hired, based on his resume, but there's a reason why they were floundering the last two years. When you have a franchise quarterback, you can't be that bad. That's on him."
Still, his past success and his experience with Rodgers and Brett Favre give him enough of a resume to be a good hire for the Jets.
Meanwhile, Eric Bieniemy, Adam Gase, Kris Richard, Todd Monken, Matt Rhule and Jim Caldwell are considered the other realistic candidates for the job.