Oscar De La Hoya wants to jump from the ring to the cage -- he's starting his own MMA promotion and he's gunning to sign Chuck Liddell as his first fighter, TMZ Sports has learned.
Oscar and Chuck were leaving the Golden Boy Promotions offices in L.A. when 48-year-old Chuck told us straight-up, "I'm making a comeback for sure."
When we pushed about signing with Oscar he told us, "We'll see" -- but they looked pretty chummy together.
"We're talking some business," Oscar added ... "It's no secret that I love what MMA fighters do.