What's Berta's first objective?

During his time in the Spanish capital, Andrea Berta was instrumental in signings such as Rodri, Antoine Griezmann and Jan Oblak for Atletico Madrid.

So, when he arrives, what's his first objective Arsenal fans?

You can only have one. Is it a contract - if so, who? Is it a signing? If so, we want a name. Is it a player sale? If so, who goes?

You get one first objective. Send it here