Despite his calibre, the midfielder has never played a first team game for the Red Devils, though he did play at Royal Antwerp last season.
Fox told ShrewsWeb: "I don't think coming to play first team football in League Two it's a step down at all, I've played a lot of reserve football and that doesn't compare to playing in a first team competitive match in the league."
Fox should slot straight into midfield for Friday's game against Rushden. He described his style as: "I'm a passing midfielder and like to try and create things, like to keep things simple and keep the team ticking along."
He also pledged to give thwe fans 100%.
Fox said he would be up for extending his stay, if circumstances allowed it, "If it goes well then hopefully I can stay a bit longer, you never know how these things work out and if suits me and suits the club then I wouldn't be against the idea," he said.