PSV have held a long-term interest in the player, while a number of clubs south of the border have also kept tabs on Reynolds' progress.
"It is true that PSV are admirers of Mark," Moyes told skysports.com. "They have held a long-term interest in him and have watched him on several occasions.
"There are a few teams in the English Championship who are also watching Mark and they are keeping tabs on him.
"Mark has just over a year to run on his contract and we will see what happens at the end of this season."