Hair transplant live online
Gray, known as Micky, is to take part in a real-time question and answer session as well as Tweeting through his surgery today, to help provide more information about transplants.
The procedure is thought to be the first of its kind to be streamed live in the UK and will be performed by Dr Bessam Farjo, an authority on hair loss and hair transplant surgery, who will also answer questions.
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Hide AdGray, 37, who played for premiership teams such as Sunderland, Blackburn Rovers and Sheffield Wednesday, noticed he was receding when he was about 32.
He said the transplant would help improve his confidence.