Fourteen players have represented both Manchester United and Everton in the Premier League. But can you name them in our fun quiz?
The two sides meet at Old Trafford on Sunday live on Sky Sports Premier League from 3.30pm, with Marouane Fellaini, Michael Keane, Romelu Lukaku and Morgan Schneiderlin current players to have represented both outfits.
Jesper Blomqvist, Tom Cleverley, Darron Gibson, Tim Howard, Mark Hughes, Andrei Kanchelskis, John O'Kane, Phil Neville, Louis Saha and, most famously, Wayne Rooney, have also turned out in United red and Everton blue during the Premier League era.
But can you pick them out in our quiz? See if you can name the players whose faces are covered by an emoji...