Radja Nainggolan has joined Inter Milan on a four-year contract from Serie A rivals Roma.
The fee is expected to be worth £21million, with two players – veteran fullback Davide Santon and 18-year-old midfielder Nicolo Zaniolo – heading to Roma in exchange.
Belgium midfielder Nainggolan, who retired from the national team after being omitted from Roberto Martinez’s World Cup squad, scored 28 goals in 155 league appearances for Roma.
Furthermore, the 30-year-old was instrumental in their run to the Champions League semi-finals last season.
Inter announced the news late on Tuesday morning and see the signing of the midfielder as a ‘real coup’.
Inter’s sporting director Piero Ausilio said: ‘We’re delighted. The Belgian is a real coup for Inter.
He is an important player and one that has always been decisive, particularly during his years with the Giallorossi. He is a top player.
‘Today (Monday) we met with him and Spalletti, discussing our tactics for the remainder of the transfer market and not of his renewal.’
He will be reunited with Spalletti as Inter look to push on from last season’s fourth-placed Serie A finish, which saw them qualify for the Champions League for the first time in six seasons.