An adviser to Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE says the presumptive GOP presidential nominee is "happy" to have a debate with Democrat Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE.

“Whether it happens or not, I think we’re all waiting to see about that, but Donald Trump certainly is happy to debate Bernie Sanders at any point,” Sarah Huckabee Sanders told MSNBC on Thursday.

Trump made headlines Wednesday night on ABC’s “Jimmy Kimmel Live,” when he said he’d be open to debating Sanders for charity.

ADVERTISEMENT

The Vermont senator responded back in a tweet, “Game on."

Sanders's campaign told The Hill on Thursday that it’s serious about debating the real estate mogul and is pressuring him to follow through on his remarks.

Jeff Weaver, Sanders's campaign manager, told MSNBC on Thursday that “back-channel conversations” are underway with Trump’s staff about a debate.

“I think it would benefit voters from across the country and I have to believe it would be one of the most-watched debates in presidential politics,” Weaver said. “Let's see if he has the courage to go one-on-one with Bernie Sanders.”

During her Thursday interview, Huckabee Sanders also took a few jabs at Democratic front-runner Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE, who declined to debate Sanders ahead of the June 7 Democratic primary in California.

“I think it just goes to show Donald Trump’s not as afraid of Bernie Sanders nearly as much Hillary Clinton is, who refuses to debate Bernie,” she said.

“If she can’t handle the guys in her own party then how do we expect for her to take on foreign leaders that are probably much more aggressive than Bernie Sanders?”