Amad Diallo has suffered his season-ending injury, with ankle ligament damage suffered in training this week in a significant blow to manager Ruben Amorim.
After recently returning to training, Amorim confirmed Shaw had suffered a small setback in his recovery when speaking before the Leicester game.
The young midfielder is enjoying a more prominent role under Ruben Amorim, but his progress has been halted but an injury picked up in training.
“Luke has one small issue in the different area from the last injury, so we try to be careful with Luke,” he said.
United have confirmed Martinez damaged his cruciate ligament and, according to reports he is expected to be ruled out for six months to a year after undergoing surgery successfully.
