Manchester United fans did not hold back with their feelings on Casemiro after the former Real Madrid star’s performance against Chelsea on Thursday evening. Casemiro has underwhelmed in the current Premier League campaign for Manchester United amid the Brazilian midfielder dealing with injuries. The 32-year-old United midfielder earned high praise in his debut season at Old Trafford after the Red Devils signed him from Real Madrid in 2022. Signed in a deal worth up to £70m, Casemiro became a pivotal midfield figure for Erik ten Hag’s men in the 2022-23 season alongside teammate Christian Erik…