Real Madrid cannot consider any offer from Manchester United for Brahim Diaz.
The on-loan AC Milan midfielder featured in last night's 1-1 draw at Old Trafford in the Europa League.
And the Daily Star says former club Manchester City included in Brahim's &eiro;18m sale contract to Real Madrid in 2019 an anti-Manchester United clause.
Real Madrid would be obliged to pay City 40 per cent of the sale price if Brahim signed for Manchester United.
Brahim is playing a leading role with Milan this season, having featured 27 times so far.
