"The football here is so different," Willock told Algemene Dagblad.
The Englishman played in an attacking role on the left and added: "Here's a place where you really play the whole flank, I'm not used to it. You have several tasks at the same time.
"Football is much more tactical.
"I'm from United, but definitely do not see Utrecht as a step back. Here I get the chance to play big man football. This should make me a better, more complete player."