Manchester United would reportedly only consider letting Anthony Martial join Chelsea if Blues forward Willian was included in any possible deal.
According to Steve Bates of the Sunday People (h/t the Sunday Mirror), United manager Jose Mourinho is a big fan of Willian, having previously worked with the player during his second spell in charge at Stamford Bridge.
Chelsea are said to be admirers of Martial too and in the report it's noted that the Red Devils would be interested in a possible swap.
"Old Trafford chiefs would only consider selling him [Martial] to the Londoners if Willian is part of the deal," said Bates.