Chelsea reportedly sent scouts to watch Jules Kounde in action for Barcelona against Napoli on Wednesday in the Champions League.
The Blues were also keeping tabs on Napoli striker Victor Osimhen in the 1-1 draw between the two sides, according to HITC.
Chelsea wanted Kounde before he moved to Barcelona and the club have renewed their interest as they think he might be available in the summer.
Barca need to make a big sale at the end of the season, with Kounde a player who could potentially command a decent transfer fee.