-- Donald Cerrone is preparing to step into the ring with longtime friend and former training partner Melvin Guillard, ready to kick his legs off and punch him in the face.

It seems counter intuitive to be able to punch your friend in the face, but not so much for Cerrone.

"I'd fight anybody, it's a business to me," Cerrone told MMAWeekly.com in an exclusive one-on-one interview.

"I don't get personal, only with Leonard," he said, referring to his best friend, whom he shares a ranch with in New Mexico.

But with Guillard, Cerrone has shown nothing but respect, appreciative that his friend would step up for the fight so that "the Cowboy" has a fight on his home turf in Denver.

Now, he wasn't so kind to former WEC lightweight champion Anthony Pettis.

Check out the interview (Warning: strong language) ...