I like Gyökeres, but I'm still not sure he's a player who can compete in the Premier League, especially Arsenal. While Portuguese league defenses tend to be quite spaced out, the PL isn't. The Premier League is the exact opposite. Gyökeres's key is his shooting, which requires him to create shots much quicker in the PL; he needs to be fast, otherwise he'll be blocked too easily and won't be able to maintain his place in the PL.
Both leagues are different, the EPL is very much physical than that of the Portugal league and the only way to know if he can compete in the EPL is to wait for next season to start. With the number of goals he registered last season and season before is really incredible and impressive so why can't he do same in the EPL for the Gunners? Let the players help him out to feel at home and if they use that same mentality Madrid did with Mbappe like letting him have the ball more, I believe it will boost his morale.