The site Calcio & Finanza goes through the kits for the big teams in serie A for the coming season, and when doing so for Inter they also write about the rebus regarding the main sponsor for the nerazzurri:

“It is still unclear who will be the sponsor of Mancini’s team next season. The contract with Pirelli expires in June but the tyre company does not exclude a renewal.”

Source: Calcio & Finanza