Herschel Walker says he still believes in Robert Griffin III -- and says he'd LOVE to see his former owner Jerry Jones sign the QB to the Cowboys, ASAP.
"I know RG3 can play," Walker told TMZ Sports ... "[he] just gotta find a team that's gonna believe in him."
Walker says his Boys would be the perfect fit -- though it's unclear if he likes RG as a starter or a backup ... especially with 35-year-old Tony Romo coming off a pretty serious injury.
Walker also likes Johnny Manziel ... and thinks the guy is incredibly talented ... but needs to figure out if football is really his passion.
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