But Murray, 28, insists it is nothing serious.
"I just felt a little bit of discomfort in the early stages and the medical team felt there was no point in trying to carry on and play the 90 minutes and take any risks," he told Wolves' official website.
"It's better to take the precaution, see how things settle down and then carry on my rehab.
"It's frustrating because I wanted to play on particularly because there were people at the game but it's better to be safe.
"The most important thing is completing my recovery - this was just another step on my rehabilitation and when you've been out for so long then these things can happen.
"I've been training well for the last three or four weeks and I've done my first warm-up for a game for a long time and that felt good."