Transfer expert Fabrizio Romano reports the Blues are in discussions over a deal worth in the region of £77million for the RB Leipzig starlet.
However, a move for the 20-year-old would see him go back to Leipzig on loan and officially join the Stamford Bridge outfit in the summer of 2023.
A centre-back by trade, Gvardiol started his career with Dinamo Zagreb before working his way through the club’s youth academy.
After making his professional debut in October 2019, the defender made 52 appearances for the Croatian side before moving to Leipzig in the summer of 2021.
Since then he has made 50 appearances for the German outfit, leading to Chelsea’s interest.

Romano added it’s expected that he’ll be formally unveiled on Wednesday.
Fofana has got the move he desires but the way the French defender has conducted himself hasn’t sat well with talkSPORT’s Graeme Souness.
“I’d fall out with him,” Souness said after Fofana played no part in Leicester’s defeat to Southampton.
“That’s possibly the wrong thing to do. At the end of the day, Brendan is walking a tightrope.
“People will be looking at him now. They’ve not had a good time, they are sitting near the bottom of the league and that’s the thing he has to deal with.