Ozzy Osbourne's final comeback gig had given him "a reason to get up in the morning" - but, as the date draws nearer, health fears continue to plague him. The 76-year-old, who has Parkinson's Disease and chronic pain in his spine, has now revealed he may be forced to remain seated for his entire set.

The former Black Sabbath frontman once sold millions of albums and toured prolifically, but to his dismay, his worsening health forced him to take a back seat, a decision which was supported by his wife and manager Sharon Osbourne. Now, ahead of his Back To The Beginning show, held on July 5 in his home city of Birmingham, he has opened up on how the gruelling surgeries he's had have affected him. The frustrated No More Tears singer exclaimed: "I’ve got more f*****g metal in me than a scrap merchants.”

He continued to the Guardian that he "may be sitting down" for the show, explaining: "I’ll be there, and I’ll do the best I can... all I can do is turn up."

After a string of surgeries Sharon described as "horrendous", she suggested the comeback concert "to give me a reason to get up in the morning".

Now he's expected to play a short solo set, followed by a longer performance with his ex-bandmates Tony Iommi, Geezer Butler and Bill Ward.

They'll triumphantly play live together as a quartet for the first time in two decades - and now he just has to hope that his health will hold up.

Ozzy had particularly wanted to play a final poignant performance as a symbol of "gratitude" to his loyal fans, explaining that he couldn't stand the idea of not being able to say one last "goodbye".

To prepare for the show, he's been trying gentle weight-lifting and bike riding and is warming up with a professional vocal coach four times a week - but it's been a challenge and a huge expenditure of energy.

"I’ve been lying on my back doing nothing and the first thing to go is your strength. It’s like starting all over again," he agonised.

He has "problems walking" after his Parkinson's diagnosis and blood pressure issues due to blood clots on his legs, while he's also had chronic pain in his spine - but the courageous rocker's determined to make his final Birmingham show a success.