Former Celtic captain Paul Lambert told BBC Radio Scotland: "It's a shock. Even though you knew he wasn't too good, when you hear (of his death) it's still a massive, massive shock.

"It's a great loss, no doubt about it. He was just a terrific guy to have known.

"I worked under him for a few years with the national team and it's just a sad, sad loss."

Wycombe manager Lambert added: "His enthusiasm for the game was terrific. He was a very funny man.

"So soon after the Phil O'Donnell tragedy as well, and then Tommy. It's just horrific.

"It was a privilege knowing him."

Celtic chairman John Reid described Burns as a man of "true integrity and dignity" whose death would be mourned by everyone connected with the club.

The former Home Secretary told the club's official website: "The passing of Tommy Burns is devastating news and my sincere and heartfelt sympathies go to Rosemary and Tommy's family.

"Tommy is someone who was loved by so many of us. He was a man of true integrity and dignity. As a Celtic player, manager and coach, Tommy served Celtic with distinction and true professionalism.

"He was a true gentleman and someone who had the ability to connect and engage with anyone he met.

"As Celtic supporters, we recognised Tommy as one of our own and Tommy in turn was always delighted to spend time in the company of fellow fans.

"It was a privilege to know Tommy Burns. He was a man who gave so much to the club he loved over so many years.

"Tommy's passing will be mourned by the entire Celtic family. He will be hugely missed by us all, but he is someone we will never, ever forget."