Vermijl joined the club on transfer deadline day earlier this week after struggling to get a regular chance at former club Manchester United.
“We have been monitoring him for a while. Marnick can play anywhere across the back four but I see his best position as a right-back,” said Gray.
“Marnick’s very quick, he can get up and down the pitch which is what you want from your full-back.”
Wednesday’s defence has arguably been the strongest area of their team this season with 25 goals conceded, while the attack has struggled with the fewest goals scored in the Championship.
Vermijl only strengthens things at the back for the Owls and his versatility means he should get more chances to play frequently.
He needs to try and use the opportunities he gets at his new club to progress having struggled at United.
It’s important that Gray doesn’t turn him into a utility man because he feels he’s a versatile player and gives him the opportunity to become the club’s number one right back.
Playing him in different positions is appealing but the obvious risk is that it could affect him when he’s used at right-back.
However, Gray is a sensible and experienced coach and it’s encouraging that he seems determined to get the most out of his new player.