Let's be honest on him, apart from one strong season he's done little else. And as far as his goal scoring even that is limited in the way in which he gets his goals, he plays a very specific game hence why when carlo set up to play his style he scored. Give him time to think or ask him to score outside the box and he's lost.
Sorry for me he isn't all that, he doesn't even come close to the intelligence and movement of kane and isn't as deadly as say lukaku was for us.
The major issue in selling him though is trusting everton to invest the money we get in good replacements and making the team stronger, that I'm afraid is likely asking to much.