I think Trossard will be more useful to us this season, too. He looked threatening today, but he needs minutes to find his form.
I'm no expert on Mudryk, but my concerns when we were going to spend a packet on him were his ability to beat his man from a standing start with little space - the same problem Martinelli has, and just about every other winger in the world for that matter - but, more importantly, his ability to score goals. I just don't see him being a prolific scorer any time soon, as perhaps ever.
I kinda see a supercharged Tomas Rosicky when I look at Mudryk (which would be some player, dont get me wrong), and I'm not sure he would have fared that differently to Martinelli today.