The Catalans revealed their interest in International Danish centre-half, Andreas Christensen who is currently playing in Borussia Monchengladbach in Germany on Chelsea loan.
The Danish centre-half, 20, has only played a couple of games at Stamford Bridge but mismatched till he was loaned, and he stood out in the Champions League against Barca this term and in other games.
Christensen could head to the Nou Camp either in the next window or more likely at the end of this season.
Barca see him as a ball-playing centre-half and an ideal partner and long-term replacement for Gerard Pique.
Christensen was 16 when he joined the Blues in 2012 from Brondby, moving through their academy and Under-21 sides.
Chelsea are in a dilemma as they do not want to lose Christensen but cannot offer him a regular start, while boss Antonio Conte wants to sign more experienced defenders, The Sun reports.
Speaking about his future last month, Christensen said: “I have not decided yet. I’m not going to do it at the moment. When it comes to me, I’ll decide next summer.
“For me, both things are possible (staying or leaving). I don’t want to be distracted, and I can’t decide alone. The question is if the clubs can agree a fee.”