By Jake Polden Erik ten Hag confirmed Lisandro Martinez has suffered a “very bad” injury in what is a huge blow for Manchester United. The Argentine defender was forced to make way 20 minutes before the end of the Red Devils’ 3-0 win over West Ham at Old Trafford on Sunday after trying and failing to play through the pain. The centre-back was caught on the knee by West Ham’s Vladimir Coufal and hobbled straight down the tunnel after he made way and was replaced by Raphael Varane. Ten Hag said: “Lisandro Martinez’s injury does not look good. It is very bad for him. We wish Licha all the best. I…