The Scotland international was a significant figure for United as the club was rebuilt following the 1958 Munich air disaster. He will be remembered when both teams wear black armbands during Sunday's Premier League fixture at home to Stoke, another of his former teams.
Herd is perhaps best remembered for scoring twice in United's 3-1 FA Cup final defeat of Leicester in 1963. The trophy was their first since the Munich tragedy, and his goals contributed to the tally of 145 that makes him United's 13th highest goalscorer.
'Hot Shot', as he was also known, later contributed to league titles in 1965 and 1967 in the process of making 265 United appearances.