Yea we did we also played 2 centre backs vs Liverpool and remember how that ended. That shouldnt be the only reason not to change things. CH tried it because teams like Arsenal had success with it vs Chelsea.
You also imply it was the only reason why we lost...
He said he had to adapt to the premier league and that at the time he played as a number 10 role for The Netherlands. He came forward more for PSV than he does for us I hope he can do that next year for us however he wasnt a number 10 for them. Koeman also plays him in a more defensive midfield...