Had a decent first half I thought, keeping in mind that he is just at the moment filling in that CF role. While he is not great with his back to goal, ref gave him nothing at all, Evans was freely fouling him. Trying to keep an objective eye, one thing I noticed was he was showing a lot more for the ball rather than just sticking by the CBs or looking to just have run in behind. To me, that was a good sign in that he took on the instruction from the 2nd half of Soton game where ETH said Rashford needed to do a bit more of that and brough it into this game.
He is not going to turn into a monster CF but, as long as he can fill in and continue to be coached to do some of the things a CF should do better, then a decent 3rd option.
Martial will be the main CF if he stays fit and Ronaldo now with the window closed and a bit more fitness having missed pre-season will probably start games ahead of him soon enough.
Once he gets back to playing the wide forward role, think ETH will help improve him especially on the decision making in that he'll actually get coached versus what seems to have been go out there and do your thing approach.