TRUMP: It would be 'inappropriate' to debate Bernie right now

Presumptive Republican presidential nominee Donald Trump backed down Friday from the possibility of debating Bernie Sanders, the Vermont senator trailing Hillary Clinton for the Democratic nomination.

Trump released a statement Friday saying that since he clinched the Republican nomination this week, he didn't think he should debate the "second-place" Sanders.

"Based on the fact that the Democratic nominating process is totally rigged and Crooked Hillary Clinton and Deborah Wasserman Schultz will not allow Bernie Sanders to win, and now that I am the presumptive Republican nominee, it seems inappropriate that I would debate the second place finisher," Trump said in the statement.

The possibility of a Trump/Sanders debate first came up earlier this week when Trump made a seemingly nonchalant, off-the-cuff remark during an appearance on late-night talk show "Jimmy Kimmel Live."

He told Kimmel that that he was prepared to face off against Sanders after Clinton turned down an invitation to debate her Democratic presidential rival before the June 7 California primary.

"Yes I am - how much is he going to pay me?" quipped Trump.

"If we paid a nice sum for the charity, I would love to do that," he added.

Sanders seemed up for it. Minutes after Trump's statement on the show, Sanders tweeted, "Game on."

And the Sanders campaign released a statement on Friday saying its candidate was ready for the debate.

"Our campaign and the Trump campaign have received two offers by broadcast television networks to host the Sanders-Trump debate that we suggested. Both offers include a major contribution to charity," the statement read.

It continued: "We are prepared to accept one of those offers and look forward to working with the Trump campaign to develop a time, place and format that is mutually agreeable. Given that the California primary is on June 7, it is imperative that this all comes together as soon as possible."

Trump acknowledged in his own statement that the debate would be an "easy payday" for charity, but still declined to participate.

"The networks want to make a killing on these events and are not proving to be too generous to charitable causes, in this case, women's health issues," Trump's statement read. "Therefore, as much as I want to debate Bernie Sanders - and it would be an easy payday - I will wait to debate the first place finisher in the Democratic Party, probably Crooked Hillary Clinton, or whoever it may be."

Allan Smith contributed to this report.