Robson played for Fulham and West Bromwich Albion during the 1950s and 1960s, and later went on to manage Fulham, Ipswich Town, PSV, Sporting, Porto, Barcelona and the club he supported as a boy, Newcastle United, whose former assistant Terry McDermott hailed his bravery.
"It's devastating," he told Sky Sports News. "Everybody knew it was coming. The people who've seen him at the weekend at the charity game, you could see he wasn't a well man.
"It shows the courage of the man to actually turn up in front of 33,000 people and get the fitting send-off he deserved because he's a fantastic football person.
"Everybody knew he was in trouble and he was going to die, but it's still a shock to everybody. Everybody remembers him obviously for being a nice person but what a great football person as well. He'll be sadly missed by everyone, not just Newcastle but football in general."
Of his personal memories of Robson, McDermott added: "I've met Bobby on numerous occasions. Eighteen months ago I went to a function in Durham, one of his charity nights, and him and Alex Ferguson came on stage... it was beyond belief how ill he was.
"He just mesmerised everybody, it was a pleasure to be in his company. He always had a story to tell, a very amusing guy. Our hearts go out to his wife and all his family."