Nate Diaz — I'm Heading Back to Stockton … to Prep for McGregor (VIDEO)

EXCLUSIVE

UFC superstar Nate Diaz just FaceTimed into the “TMZ Sports” TV show — and told us he’s on the way to his hometown Stockton, CA … to get ready for the McGregor fight with “the best training in the world.”

Diaz says he’s been working out in L.A. — but now, he’s kicking the training into high gear — “I’m going home now where I got all my good s*** at.”

You gotta watch the entire interview Friday night on FS1 — Nate keeps it all the way real … especially when we bring up the Forbes list of highest paid athletes.