Story updated 09/07/2011, 10:00
Examples from earlier decades include ex-striker David Herd (pictured) and former defender Steve James. But what about the modern era - did you get the six we were looking for, noting we were only counting players who've made first-team appearances in senior competitions?
We promised to put you out of your misery at 10:00 on Saturday morning, so here without further ado are the answers:
Nick Culkin, Simon Davies, Graeme Hogg, Steve Pears, Mads Timm, Antonio Valencia.
Look out for another trivia teaser on ManUtd.com next Friday.