Former NFL quarterback Peyton Manning is already being talked about as a possible Republican contender to compete for Tennessee Sen. Bob Corker’s U.S. Senate seat after Corker revealed Tuesday that he will not run for re-election in 2018.

A Tennessee Republican source told the Washington Examiner that Manning was one of three names that came to mind as potential GOP candidates, along with Rep. Marsha Blackburn and Gov. Bill Haslam.

Meanwhile, Rep. Scott DesJarlais, R-Tenn., also floated Manning as a possibility, but for 2020 if Sen. Lamar Alexander decides against seeking re-election.

“I don’t think so,” DesJarlais said when asked if Manning was a possibility to replace Corker. “I know that that rumor had been floated out. He’s a great guy and popular guy.”

“I think he may be looking more at [2020] if Sen. Alexander doesn’t run again,” he added.

Conservative activist Andy Ogles has already announced a campaign for Corker’s seat, according to the Tennessean. That report also lists former state Rep. Joe Carr and state Sen. Mark Green as possible GOP candidates.

Manning, who is a two-time Super Bowl winner, played for both Indianapolis Colts and Denver Broncos during an 18-season career which ended when he announced his retirement May 2016. He played for the University of Tennessee before his professional career.

Manning was spotted with Corker at the White House in June, wearing golf attire and spent the day playing golf with President Trump.

Speaking to CBS in January 2016, Trump called Manning a “very good guy,” while picking his team, the Broncos, to win the Super Bowl, according to CNN.

David Drucker and Al Weaver contributed to this report.