“Yet we still just kept going and that was the important thing because we just got on with the job.”
Van Gaal said Martial had been ‘smart’ in deciding to pull out so close to kick-off.
He added: “He’s a smart player. He was wise to step out because he just felt something and it’s not worth risking it.”
The United boss now has 14 first team players under treatment, but he’s getting used to it.
He added: “We now have to play Arsenal in two days time. We just have to cope with it.”