Arsenal look set to seal their first signing of the summer. After a lot of speculation around Arsenal adding a new striker or a new midfielder to their ranks this summer, it looks as though Mikel Arteta’s first signing in this transfer window will be a new centre-back. Indeed, Riccardo Calafiori has been strongly linked with Arsenal in recent days, and it’s said that a deal to bring the Italian to north London is now all but done. Arsenal have won the race to sign Riccardo CalafioriAccording to Gazzetta, Arsenal have won the race to sign Riccardo Calafiori and the negotiation is now closed. A …