Really?Morata as a second choice or rotational option would be pretty good. Okay he's not prolific but his all round game, ability to beat his man, link up and hold up play all really helps his team if he's as good as used to be. Plus he brings plenty of experience, which is helpful.
If you want strikers who are going to come deep and get involved in building up attacks both Jesus and Morata offer abilities on the ball most pure number 9s don't offer. And this all helps your team create more and gives other attacking players more goal scoring opportunities
Morata has been absolute dogsh1t for some time now.