But the details have remained unclear, with doubt over an accompanying tour, and even more doubt over whether original drummer Bill Ward will rejoin Osbourne, Tony Iommi and Geezer Butler for their swan-song.

But G thinks Sabbath will roll into action in the coming months - he tells My Global Mind: "We're doing Japan in November. However, I don't think there's going to be a lot coming out of Ozzy because he's going back to Sabbath to make another one.