I'm fine with Watkins, it's not willy shaking but I'd feel a little something in my pants.
He's a clear upgrade on Jesus, and as good as the strikers I've wondered about (Mbuemo) or not wanted (Vlahovic). He is also a clear tier (or two!) above Sesko, who may never pan out and become the player that Watkins is.
Also strikes me as a player that could do a job on our wings when needed. Arteta likes his flexibility so that may be appealing to him.