Donald Trump said his controversial proposal to ban foreign Muslims from entering the United States is "just a suggestion" on Wednesday night.

"It's a temporary ban. It hasn't been called for yet," the likely Republican nominee said on Fox New Radio's "Kilmeade and Friends."

"Nobody's done it. This is just a suggestion until we find out what's going on," Trump added.

In a December press release, Trump called "for a total and complete shutdown of Muslims entering the United States" following the San Bernardino terror attack.

His tone has appeared to soften now after a back-and-forth about the ban with newly elected London Mayor Sadiq Khan, who is Muslim.

Trump will meet with House Speaker Paul Ryan on Thursday in an attempt to win him over and unite the GOP. In December, Ryan said the Muslim ban is "not who we are as a party."

In another interview with Fox News' Greta Van Susteren Wednesday, Trump emphasized that his ban would be temporary.

"No, it was never meant to be — I mean that's why it was temporary," he responded when asked if he would consider backing off the ban.

"Sure I'd back off on it. I'd like to back off on it as soon as possible, because frankly, I'd like to see something happen. But we have to be vigilant," Trump explained. "There is a radical Islamic terrorism problem that our president doesn't even want to talk about."