Belgium striker Michy Batshuayi is Chelsea FC’s first signing in this summer’s transfer window.
A former player in France’s Ligue 1 club Marseille, the 22-year-old will also become new Blues manager Antonio Conte’s first signing for the club.
The transfer fee for his move to Stamford Bridge was rumoured to be around £33m.
Batshuayi, who has scored 23 goals for Marseille last season, has also scored in Belgium’s last-16 win over Hungary at Euro 2016. He had also made an appearance during his national’s team quarter-final exit to Wales.
“I am delighted to sign for one of the biggest clubs in Europe,” he said.
“My Belgium team-mates] Eden Hazard and Thibaut Courtois have told me many good things about the club, and with Antonio Conte coming in, it’s an exciting time to become a Chelsea player.”
Meanwhile, Henrikh Mkhitaryan is set to join Manchester United after Borussia Dortmund appeared to confirm their player’s impending departure.
The Armenian captain, who joined the Bundesliga club from Shakhtar Donetsk for £23.5m in 2013, will be out of contract next summer.
“Had we refused it, the player would be available for free in 2017,” Dortmund chief executive Hans-Joachim Watzke told the club’s official website.
However, the 27-year old is yet to have a medical at Old Trafford, with personal terms pending agreement.
Should the deal be completed, he will be Jose Mourinho’s third major signing for Manchester United within this year’s summer transfer window, after Ivory Coast defender Eric Bailly and former Sweden international Zlatan Ibrahimovic.
It is also part of the Portuguese manager’s effort to revamp the Red Devils as Mourinho prepares to renew his rivalry against Pep Guardiola as well as a new Premier League managerial landscape.