Juve defenders looked to be holding back the Bhoys players from set pieces, and Commons is unhappy that his side were not awarded a penalty.
"Gary Hooper was pulled down to the ground on far too many occasions and we got no rewards," Commons told BBC Sport. You've got a referee there, a guy behind the goal, a linesman - the whole idea of the official behind the goal is to look out for this sort of stuff.
"If he can't identify when people are being hauled, manhandled, wrestled to the floor then I don't think he should be in a job.
"He said if you do it again they'll get a penalty - that was in the first half. He kept stopping it and booking people and telling people to stop it. It clearly had no effect because right up until the 91st minute when we had a corner it was still going on."
The return leg takes place on March 6 in Italy.