Presumptive Republican presidential nominee Donald Trump will not debate Democratic candidate Bernie Sanders, he announced Friday, as he decided it would be "inappropriate" to debate the Democratic insurgent, who is far behind Hillary Clinton in their nominating contest.

In a statement, Trump ended nearly 48-hours of speculation that such a debate would take place, after he seemingly accepted an invitation to debate Sanders offered by late night host Jimmy Kimmel. Trump aides quickly said it was a joke, but the candidate followed-up in a Thursday news conference suggesting he might accept if networks donated millions to women's health charities.

"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. "Likewise, 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. 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."