Bruce was asked by Schar has now played out of position in the last two games.
He said, "I thought we needed Fabian Schär's physicality and I think it worked in the first-half. “Him playing in midfield is something we've worked on in training so it's given me food for thought.
“With Sean Longstaff and Isaac Hayden out we are short so I picked him for his physicality."
Longstaff has been linked with a move to Udinese in Italy but has appeared just twice since lockdown with two fleeting appearances as sub.
His contract runs out at the end of the month.