Barcelona have announced the signings of Franck Kessie and Andreas Christensen on free transfers.
Ivorian midfielder Kessie, 25, joins from AC Milan, while Danish defender Christensen, 26, comes in from Chelsea.
Both players have signed four-year deals and their releases clauses are set at 500m Euros (£430m).
Kessie played 224 times for the Rossoneri, scoring 39 goals, and helped the club to their first Serie A title in 11 years last season.
Christensen came through the youth academy at Stamford Bridge and played a total of 161 times for the Blues, while also spending two seasons on-loan at Borussia Monchengladbach.
He won the Champions League, Europa League, Uefa Super Cup and Club World Cup with Chelsea.
Brazil midfielder Philippe Coutinho has left the Nou Camp this summer, joining Aston Villa on a permanent deal for £18m, while forward Ousmane Dembele and right-back Dani Alves left after their contracts expired.
Barca remain in the market for attacking reinforcements. Prolific Polish striker Robert Lewandowski is looking for a way out of Bayern Munich and would welcome an opportunity to test himself in La Liga at 33 years of age.
Brazil international winger Raphinha has also emerged as a top target for Barca, with the South American prepared to show patience at Leeds despite attracting rival interest from the likes of Arsenal and Chelsea.