Marcos Alonso has joined Chelsea from Fiorentina in a deal reportedly worth around £23 million.
Luis Alberto has completed his transfer to Italian side Lazio, Liverpool have confirmed.
Aquilani, who has won 38 caps for Italy, left Sporting earlier this summer after spending just one season in Portugal's top flight.
ESPN's Man City correspondent Jonathan Smith discuss Joe Hart's season-long loan move to Serie A side Torino.
Udinese have been hit with a €3,000 fine after their ballboys "deliberately" wasted time in their 2-0 win over Empoli last weekend.
Hart, 29, has been allowed to leave the Etihad Stadium after falling down the pecking order under new City boss Pep Guardiola.