When Casemiro was booked against Crystal Palace at Selhurst Park in January 2023, it immediately took the wind out of Manchester United's sails. Erik ten Hag's side were a few minutes away from a 10th win in a row when their Brazilian kingpin was cautioned for a foul on Wilfried Zaha. Ten Hag and his teammates knew there and then that Casemiro would be banned for the trip to Arsenal four days later. Visibly deflated, they conceded a late Michael Olise equaliser to Palace and then lost at the Emirates.