A brilliant inside-forward who won the FA Cup with both Manchester City and United, it is important to pay tribute to his impact in the game on the day that the derby coincides with the 100th anniversary of the end of the First World War.
The club will be doing just that by issuing special shirts to the United mascots at the Etihad Stadium for the Premier League game, which kicks off at 16:30 GMT.
Turnbull was one of many who lost their lives in Arras, France, with the date of his death registered as 3 May 2017, even though he was missing in action for some time and initially it was hoped he had merely been captured.