Barcelona are in advanced talks to sign Chelsea defender Andreas Christensen and AC Milan midfielder Franck Kessie on free transfers in the summer, sources told ESPN's Sam Marsden and Moises Llorens.

The players' respective contracts expire in June, and Barcelona reportedly expect them to join before next season, barring "any late twists" in negotiations. The Spanish club hopes to finalize both deals as soon as possible before they focus on recruiting other players.

Barca are also optimistic of bringing in Christensen's captain at Chelsea, Cesar Azpilicueta, when his Blues contract expires at the end of the campaign, Marsden and Llorens report.