Ward also wants a "signable contract" before he will agree to hit the road or the studio with Ozzy, Geezer Butler and Tony Iommi in 2016.

A full reunion in 2011 fell flat when Ward revealed he could not sign the contract he had been presented with. His decision upset Osbourne, who has spent the last three years publicly criticising his former drummer's abilities and refusing to apologise when Ward asked him to.

Asked if there was any chance Black Sabbath fans could witness a full reunion in 2016 during an appearance on North Carolina's 106.5 WSFL radio station, the drummer said, "If everybody could get on the same page... My page, I've been quite pronounced about my page, which is a signable contract and an apology over certain issues that Ozzy said about me that weren't true. I'd like him to publicly apologise. He said these things at the public level, so I'd like him to publicly apologise.

"He's already responded to that, saying that'll never happen. So, as long as that'll never happen, then I probably won't be joining the band in 2016."

But Ward confessed he still loves Ozzy and his former bandmates, adding, "Would I like to play with them? Yes, I would. Am I upset about all the upset? Yes, I am. I'm very, very sad by all the fans' reactions and the way that things have split and gone different ways and everything else. It's not nice at all to be in this position, and it's not an easy responsibility for me to maintain when uncountable amounts of people are angry with my decision-making process, which was that I need a signable contract. And now I need an apology.

"If we could get past everything, and everything else, I would love to be a part of it. You know, I love the guys. I mean, I still love Ozzy. Just because we have a disagreement, or there's a disagreement on the table, I still love him very much."