Arsenal fans have had a lot to say since the club officially announced the signing of Riccardo Calafiori today. Riccardo Calafiori is now an Arsenal player. After a drawn-out transfer saga, the Italian defender has now joined up with Mikel Arteta and his touring squad in the US. Calafiori gave a short speech to his new Arsenal teammates, and has been handed the No. 33 shirt in accordance with his wishes. The 22-year-old could now be in line to feature for the Gunners on Thursday, when they will take on Liverpool in a friendly match in Philadelphia. Arteta pushed hard to get the Calafiori signi…