New York Giants Chairman Steve Tisch said he would have a lot of questions for pal Donald Trump before approving him as the owner of the Buffalo Bills.

The Manhattan real-estate tycoon is among at least three bidders lining up to buy the NFL franchise after the death of owner Ralph Wilson Jr. in March.

“I would have a lot of questions for Trump” before deciding how to vote, Tisch told The Post.

Tisch said he would ask Trump about his views on ownership, and what he could add to an NFL team.

Three-quarters of the owners, or 24 of 32, would need to approve any new Bills owner, and the first chance to do so could be at an early October NFL meeting.

Pennsylvania fracking billionaire Terrance Pegula and a Toronto investor group that includes rocker Jon Bon Jovi have also submitted bids.

As The Post reported, Trump — who has pegged his own chances of buying the team as a long shot — would sell his remaining casino assets if he ends up submitting the winning bid.

While Trump is friendly with Tisch and other NFL owners, the league, which has long tried to distance itself from sports betting, would likely want to steer clear of his casino holdings.

“If the commissioner says Trump has divested his gaming assets,” Tisch said, “his history would not bother me.”

Asked about The Donald’s character, Tisch, knowing him better than most owners, said, “He is a character.”