WBO junior welterweight champ Terence Crawford says there's one reason he'd never try his hand (or feet) at MMA ... the almighty dollar ... 'cause according to TC there's just not enough money in grappling.
We talked to Crawford while he was promoting Saturday's fight with Victor Postal -- a fight some think could vault him into super stardom -- and asked if there was a chance he'd ever switch sports.
It's not a crazy question ... former boxing champ Amir Khan has been talking about it ... taking to social media to start the hype machine for a potential rumble with UFC king Conor McGregor.