We already have Berna so we don't need Golovin.
Bernard is classified as a winger and he barely coped playing at his actual position this year...
Eventually he will become the Cuadrado successor and again we would need some depth, all of our CMs are mostly defensive orientated.
Berna and Dcosta will replace Mandzu and Cuads.we have could penetration skills on the wings, but not someone to connect the midfield with the attack in the center.
IMO, we have plenty of tools for every role, except that
Berna and Dybala failed to deliver in this role and Pjaca is a promise that fades.
Golovin would be a tool for this certain tactical need and if it goes well, we will become more efficient as a team on the ocassions we struggle to capitalize our dominance.