Erik ten Hag wants his Manchester United players to show a 'nasty' streak - but warned them to be more streetwise too.
The Dutchman is demanding a greater intensity from United and is happy if that makes them a tougher team to play against.
But after seeing Diogo Dalot booked after 90 seconds of Sunday's 6-3 thrashing in the Manchester derby at the Etihad for a foul on Jack Grealish, and Tyrell Malacia also cautioned midway through the first half for another challenge on the City winger, Ten Hag has warned his players to avoid needless yellow cards.