Midfield is still a concern. Can needs to integrate, and Bentancur needs to elevate his game further and avoid brainfarts/being a card magnet, if we are really serious about winning the CL. Serie A isn't really a concern, but without upgrades in midfield, our journey might end sooner than expected.
Kean looks like he will become a 100 million rated striker in 2-3 seasons. Costa seems to be slowly getting back into form, and Zola's Spinach looks a good prospect.
He might actually surprise us. If he can stay healthy and focused, we have a quality midfielder who can make runs and link midfield and attack. Also, it should allow Dybala to play further forward and not need to constantly drop deeper to pick up the ball and start attacks.