Mellor handles Potters midfielder Geoff Cameron.
And he told The Sentinel: “There has been interest in players at Stoke.
“Obviously I have the calls because I do a lot of work over there.
“I think there are players who could do very well. It's a league which is getting bigger and bigger and what will happen as more clubs progress, the domestic talent pool will get thinner.
“They will look at overseas slots to raise the quality of the league. I look at someone like a Jon Walters, who I don't represent, and the way he carries on running and works hard, the way he almost bullies people... I think he would have a phenomenal chance in Major League Soccer."