MLS:
David Beckham (LA Galaxy)
Terry Cooke (Colorado)
Richard Eckersley (Toronto)
Eddie Johnson (Portland)
Mark Wilson (Dallas)
NASL:
Tommy Baldwin (Seattle)
Peter Beardsley (Vancouver)
Jimmy Greenhoff (Toronto)
Gordon Hill (Chicago Sting)
Brian Kidd (Fort Lauderdale)
Alex Stepney (Dallas Tornado)
Dennis Viollet (Baltimore Bays)
Tony Whelan (LA Skyhawks)
United have had plenty of players who have gone on to ply their trade in the USA over the years, including David Beckham who, of course, won the MLS Cup with LA Galaxy this week.
Our latest poser related to former Reds who, like Becks, have played in Major League Soccer after leaving Old Trafford. We were looking for four other Englishmen who have done this - and they must have made at least one competitive appearance for the United first team.
Gluttons for punishment may have tried to recall United players with the same criteria who played in MLS' 1968-1984 forerunner, the North American Soccer League (NASL). We came up with eight names but there might be more!
All the answers are listed on the left - please note that some players represented more than one club. We'll have another teaser next Thursday.