Ramsey confirmed his long-awaited move to Juventus yesterday, agreeing a four-year deal which will come into place over the summer.
The Gunners revealed they would not be offering the midfielder a new contract last year, leading to a number of European outfits expressing their interest in a free transfer.
Posting on Instagram tonight, he sent a message to Ramsey, writing: "Welcome to Juve family. Get yourself ready for hard work. The next few years is all about winning! PS. What's my commission."