Rex Ryan reportedly will interview Sunday for the 49ers' head-coaching job.
The Jets fired Ryan on Monday along with their general manager of two years, John Idzik.
Meanwhile, Jim Harbaugh parted ways with San Francisco and shortly thereafter agreed to become Michigan's new football coach.
Harbaugh had a 44-19-1 record in the regular season and a 5-3 playoff record, including a 2013 Super Bowl appearance, during his tenure with the 49ers.
The Jets struggled in 2014, finishing with a 4-12 record -- the worst in Ryan's six years as their coach. Though they made it to the AFC Championship Game his first two years, the team had non-winning records and did not reach the postseason the past four seasons.
Nevertheless, Ryan is expected to garner interest from NFL clubs. He's reportedly drawn interest from the Atlanta Falcons, who fired coach Mike Smith after seven seasons.
"He had a tremendous impact [on the franchise]," Jets owner Woody Johnson said of Ryan on Monday. "He made the team relevant in some respects."
Despite Ryan's departure, Johnson said he still believes in his former coach.
Asked what he would tell another owner about Ryan, Johnson said: "I'd take him."