He is way off his mark and should be benched. Might hurt his already low self-esteem, but, on the other hand sending him on the pitch on and on again sends poor and mixed signals to competing strikers. His movements off the ball are non-existent and I can't find any reason why unless he is drained out somehow or told to stay put (which is a really poor suggestion then).
Yes, he is our only real option to tower defences, fortunately we seldom cross in floating balls. We seldom cross and when we do they are usually drilled towards first post.
Too bad Morata misses another league game.