Riccardo Calafiori is on his way to Arsenal, while Jakub Kiwior may depart if the club receives a reasonable offer (Fabrizio Romano confirmed).

Arsenal are open to a loan deal with an option to buy next summer. Teams from the Lega Serie A have expressed interest, but no formal bids have been made. 
Kiwior would be an excellent signing for any Italian team, a talented defender/centre-back who might improve with continuous playing time. 
Selling for a profit is good, but not having a solid offer to keep him is not awful either.