MGM Yonkers abruptly withdrew its bid for a New York casino license Tuesday, eliminating one of the favorites in the competition and possibly clearing the way for a bidder who would pay the Trump Organization a huge windfall.

The surprising development sparked Yonkers Mayor Michael Spano to call for a state investigation.

MGM Yonkers’ decision leaves just three entities bidding for the three casino licenses the state can hand out as soon as December. Notably, the state Gaming Commission isn’t mandated to award all three available licenses but merely to award qualified bidders.

Still, the Yonkers development would appear to clear the field for two bidders in Queens — including one backed by New York Mets owner Steve Cohen — and one in the Bronx. If the Bronx partnership, led by Bally’s G

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