He’s dropped a fortune trying to score government support to build a casino next to Citi Field, and now Mets owner Steve Cohen is banking on a nearby soccer stadium project to help him hit the jackpot.

Insiders say the billionaire hedge funder and his team believe a $780 million mixed-used development project announced Wednesday by city officials — which includes a 25,000-seat stadium for the New York City Football Club, a hotel, and 2,500 units of affordable housing — is a big win for Cohen’s expected bid to secure one of three downstate casino licenses that Albany pols plan to make available.

“They view the stadium plan as big selling point for the casino,” said a City Hall operative. “Anything that shows the state that more people will be coming to the Willets Point area will only help the casino plan.”