Sean McVay Gets Message From Top Free Agent D-Lineman, Sign Me!!!

Sean McVay, listen up ... a 325-pound beast says he wants to help the Rams win a championship -- 'cause Domata Peko tells TMZ Sports he wants to sign with L.A.!!!

"I would like to be with Aaron Donald, man," Peko says ... "Hell yeah! That would be dope."

34-year-old Peko shot down retirement rumors with our camera guy out in Bev Hills on Tuesday ... and says he's definitely trying to play a 14th season in the NFL.

Domata tells us he just had a visit with the Detroit Lions last week ... but the team he'd really like to sign with is McVay's.

"Coach McVay! Your boy, Domata Peko, here, ready to go. I would love to come out here, represent L.A. and try to pursue that championship!"

We also asked Peko how his ex-teammate, Vontaze Burfict, would handle being on the same Oakland squad with longtime rival Antonio Brown this year, and Peko says he doesn't predict any problems between the two.