Manchester United need a ruthless, aggressive edge to their game but their players must also become more streetwise and savvy if they are to challenge for honours again, manager Erik ten Hag said before Sunday's Premier League trip to Everton. United have accumulated 23 yellow cards after only seven games this season, with Scott McTominay and Diogo Dalot both one booking away from suspension while captain Harry Maguire and Bruno Fernandes have been booked three times each. "I know nasty, I know what it is - in that manner, we can progress, sometimes also play a little bit smarter.