'Shark Tank's' Kevin O'Leary -- I Want To Buy An NFL Team!!!

There's already a "Shark" in the NBA ... but now, Kevin O'Leary tells TMZ Sports he has HIS sights set on the NFL -- there's just one problem ... the price.

Mr. Wonderful was out in NYC yesterday when he told us it's REALLY hard to buy into the NFL (just ask Donald Trump) ... but says, "To me, that's what I'd love to own."

Don't worry, Kev has a smart business plan (of course) to get into the owner's box without having to cover the ENTIRE cost of a pro squad.

There's more ... Kev also explains why the hottest city in North America in need of a pro sports team is NOT Los Angeles ... it's not even in the United States.