Donald Trump told Fred Dicker in a Talk-1300 interview Wednesday morning he “won’t waste my time” with a campaign for governor if Westchester County Executive Rob Astorino throws his hat into the ring.

Trump reiterated that he would launch a gubernatorial campaign if there is a “unified” Republican Party behind his candidacy, and added that he doesn’t think Astorino will defeat incumbent Democratic Gov. Andrew Cuomo.

Trump is due to be in Erie County on Friday for a Republican reception being thrown by GOP Chairman Nick Langworthy.

“They’ve sold out the room,” Trump said.

Astorino is yet to declare his candidacy for governor, and has said he will make a decision by the end of February.

At a meeting of the state Conservative Party earlier this week, Astorino sharply criticized Cuomo and said he was “leaning in that direction” of running.

The state party chairman, Ed Cox, has been an enthusiastic supporter of Astorino’s potential candidacy.

But some Republicans who have met with Trump have expressed concerns that Astorino doesn’t have the name recognition or money to run a competitive campaign against the governor, who has $33.3 million in cash on hand.

Astorino has said he believes he will be able to raise a competitive amount to take on Cuomo.

Trump, of course, has flirted with running for president in 2012 only to back out and return to his reality television show “The Apprentice.”

Carl Paladino, the 2010 Republican nominee for governor, has met with Trump and said the real-estate mogul serious about a potential run for governor. Paladino said flatly on Sunday he would try to run on the Conservative Party line if Astorino is the Republican nominee.