Donald Trump on Monday seemed to back away from his earlier commitment to debate Vice President Kamala Harris, questioning the value of a meetup and saying he “probably” will debate but he “can also make a case for not doing it.”

Trump, in an interview with Fox News Channel that aired Monday night, was pressed several times about committing to debating Harris before giving a squishier answer than he had in recent days.

The Republican former president had been eager to debate President Joe Biden when he was the Democratic nominee after months of suggesting that Biden was not mentally up for the matchup — or the presidency. But after Biden dropped out of the race and Harris became poised to be the Democratic presidential candidate, Trump has been questioning the terms of the original debate he agreed to with Biden. He has suggested the Sept. 10 debate on ABC News should be moved to a different network, calling ABC “fake news.”

Last week, in a phone call with reporters, Trump was asked if he’d commit to debating Harris at least once. He responded: “Oh yes, absolutely. I’d want to,” and said there was an obligation to debate.