Inter have completed the signing of Portugal winger Ricardo Quaresma from FC Porto for an initial €18.6m fee – with midfielder Pele moving in the opposite direction.
The 24-year-old Quaresma has accepted an initial five-year contract with the Italian champions after passing a medical.
He joins compatriot and coach Jose Mourinho at the San Siro while Portuguese Under-21 international Pele, who is valued at €6m, travels the other way as a makeweight. The total cost of the Quaresma transfer could rise to €30.6m depending on appearances.
The wide man came up through the Sporting Lisbon ranks, making his debut during the 2001-02 campaign.
He was bought by Barcelona in the summer of 2003 but managed only ten Spanish Primera Liga starts before switching to Porto 12 months later.
During his ensuing four-year spell with the 2004 European champions, he won successive Portuguese titles between 2006 and 2008, establishing himself in the Portugal squad.
He has scored three goals in 23 internationals, featuring twice for Luiz Felipe Scolari's team at Euro 2008.
Quaresma becomes Mourinho's third summer recruit following the arrivals of midfielder Sulley Muntari and winger Amantino Mancini, from Portsmouth and Roma respectively.
The Nerazzurri began their Serie A championship defence with a 1-1 draw at Sampdoria on Saturday.