ROSEMONT, Ill. – Michigan and Notre Dame are two of college football’s most iconic brands.

The rivalry between the programs includes memorable moments but there’s an uncertain future as the Wolverines and Fighting Irish have only one game left scheduled. Michigan athletic director Warde Manuel said he has talked with Notre Dame athletic director Jack Swarbrick abut extending the series but that hasn’t materialized into a deal.

“We haven’t talked about anything recently,” Manuel said Monday while at Big Ten headquarters outside of Chicago for the annual spring athletic directors meetings. “We have talked in the past about wanting to continue but in the last few months, no, we haven’t talked about it.”

Michigan owns a 24-18-1 edge in the all-time series against Notre Dame that began in 1887 and has been on and off. The teams met every year from 2002-14 as part of an agreement to play 25 straight seasons but the Fighting Irish opted out of the deal. That led to a three-year hiatus, but the schools agreed on a home-and-home series for 2018 and 2019. Notre Dame won 24-17 at home in last year’s season opener and the teams will meet on Oct. 26 in Ann Arbor.

Michigan and Notre Dame both have schedules filled out through the 2021 season, but nonconference games can be cancelled. The Wolverines paid $2 million to nix a series with Arkansas for the latest two-year deal with Fighting Irish. Just when Michigan and Notre Dame will meet again after this year remains uncertain.

“I’ve been working on some other scheduling things and so has (Swarbrick),” Manuel said. “We both have the interest to do it in the future, just not sure when.”

Mum on contract talk: While at the Big Ten athletic directors meetings last May, Manuel said he hoped men’s basketball coach John Beilein and football coach Jim Harbaugh would both retire as Wolverines.

Half of that wish is gone as Beilein on Monday was announced as the new coach of the Cleveland Cavaliers after a highly-successful 12-year run in Ann Arbor. Harbaugh, meanwhile, is approaching the fifth season of a seven-year contract signed in 2014 and netted $7.5 million last year in compensation.

“I’m not going to announce any conversations I’ve had with Jim about his contract or whatever,” Manuel said. “I stand by my decision and my statement that I want him to retire here.”

Harbaugh, who starred at quarterback for the Wolverines, made his debut as a head coach at San Diego for three years, spent four seasons at Stanford and four with the San Francisco 49ers before returning to his alma mater. He has a record of 38-14 with the Wolverines.