Paris Saint-Germain have announced the signing of Thiago Silva from AC Milan on a five-year deal.
The news follows Milan owner Silvio Berlusconi's announcement that he had agreed to sell both Thiago Silva and Zlatan Ibrahimovic to PSG.
The Brazil centre-back's agent, Paulo Toniello, had indicated on Saturday morning that the transfer was still "far from" complete, but terms were agreed later in the day and the move has now been finalised.
A statement on PSG's official website read: "Thiago Silva, 27 years old, Brazilian international, from AC Milan, has this Saturday signed with Paris Saint-Germain for five seasons."
PSG coach Carlo Ancelotti has said that there are no plans to sell any defenders despite the signing and warned Mamadou Sakho, who has fallen down the pecking order since the Italian's appointment, that he will not be allowed to move on.
"With Silva and Alex, we have a good basis for the defence and I will choose the best players for each game," he said. "I won't neglect the other defenders who perform well.
"There hasn't been a discussion over any defender leaving as a result of this. If Sakho demands to leave, we have taken our decision: it's that he must stay."
The deal to take Ibrahimovic to Paris, though, has yet to be agreed, with the player reportedly eager to secure a salary in the region of €14 million a year.
His agent, Mino Raiola, denied on Saturday that the Sweden striker had arrived at the club to undergo a medical and indicated that talks were still ongoing.
"He is not in Paris to pass his medical," he told the media. "We will continue to work and give a press conference when everything is settled."