Grizzled ROLLING STONES star Keith Richards is keeping Disney bosses hanging on because he still can't commit to play Johnny Depp's dad in the PIRATES OF THE CARIBBEAN sequels.

Richards spent a fun day with Depp, who based his CAPTAIN JACK SPARROW character on the rocker, and even tried on some costumes - but he still hasn't said he'll play a pirate.

He says, "Johnny and I spent a great afternoon trying to get these things (costumes) on. But that doesn't mean I'm doing it. At the moment I've turned them down.

"They're shooting while I'm touring. I'd love to do it if there was no hassle, but it would be a side trip. I know what my gig is.

"The idea of working for Disney gives me the shivers in the first place."