Barcelona have announced the signings of Franck Kessie and Andreas Christensen on free transfers.
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.