McCullough, who's also known for work with Spooky Tooth, Joe Cocker, Pink Floyd and others, was rushed to hospital in November. Some news outlets mistakenly reported he had died.

Now Seiwell � who left Wings alongside McCullough in 1973 after two years �tells Something Else: "By the time the ambulance got there, because of the lack of oxygen from the period of the heart attack to the first treatment, he suffered some significant brain damage.

"Some of the doctors, according to friends, don't think he's going to have much of a recovery. He's going to need constant care for the rest of his life."