Archie Macpherson writes at length about him in his book Action Replays which is out of print but can be bought second-hand on Amazon. He was the main commentator on Sportsreel and I don't think it was much of a secret he was a Rangers fan. He didn't like/feared Jock Stein.
I think the book is well worth getting if you want a sense of the man and his career/personality traits. He was a big influence on Macpherson.