I may seem over critical of Mount when I say that he isn't creative and suited for the number 10 role, specially since his "key passes" are soaring but here's an example of why a poor key could be the one thing wrong with a circuit.

Callum Hudson-Odoi and Timo Werner dropping in between the lines and dragging the defenders out was a common theme last night, and the job of Mount was to make those third man Runs.

Callum Hudson-Odoi dragged Dier quite out from his line creating a massive space for Mount to run into

Jorginho makes a pitch perfect first touch pass into the space to free Mount to make a run into the space. All he needs to do is take a touch to set himself in a shooting position and pick his spot at the net

Mount instead flicks it backwards towards Timo Werner. Very few situations call for a backwards pass towards a man running into the box. You either take the shot after rolling the ball into the box or you flick it in front of your man if there is space.

What does Sofascore or Fotmob tell you?
Mount - 1 key pass.
Werner - 1 chance missed.