Christensen and Azilicueta are both out of contract in June and have yet to agree new terms with the Blues, who are also facing the prospect of losing Antonio Rudiger as a free agent.
According to Newscollect247, Barca are still eyeing the defensive duo and are lining up a double swoop in their bid to strengthen after a hapless campaign
The Blaugrana have contacted Azpilicueta, who was told they will wait for him to decide between them and the west Londoners.

The Catalan giants have offered the Chelsea captain a two-year contract with an option to extend for one more.
Romano tweeted: "Barcelona have confirmed to Cesar Azpilicueta they are prepared to wait for his final decision between Chelsea and FCB.

"Barca are now confident - but it’s about life, family and more.

"Barcelona bid on the table: contract until June 2024 plus option for further season."

Barca getting use to this free free transfers this days