Donald Trump is set to have a role at the Republican National Convention in Tampa, but exactly what isn't yet known.

"I was asked to speak at the RNC but said no, because I will be doing something much bigger -- just watch!" Trump posted on Twitter today.

ABC News reported the real estate mogul-reality TV star will have a "unique" and "memorable" role at the convention, according to Michael Cohen, executive vice president and special counsel to Trump.

Trump will definitely be in the neighborhood. He's going to be feted on Aug. 26, the day before the GOP convention begins, as Statesman of the Year by the Sarasota Republican Club.

Ever since Trump endorsed Mitt Romney for president, he has been an active supporter. He taped robo-calls to get out the vote in Michigan and Ohio during the GOP primaries and he has hosted fundraisers for the presidential candidate.