Chelsea are currently keeping tabs and monitoring Koulibaly and Mertens transfer status as they eye a possible move for the Senegalese, MySportDab reports.
The Blues are currently in search of a defender with Declan Rice transfer with West Ham proving to be expensive.
Koulibaly might be another option that might come cheap due to his age and demand in the market isn’t as high.
Although there is also a link with Liverpool which looks likely with Virgil van Dijk out on a long time injury.
Chelsea are also in and ready to snatch a move for the defender which will be massive for them as he will team up with fellow countryman Edouard Mendy.
Chelsea are, according to football.london, keeping a close eye on events at Napoli concerning their defender Koulibaly.
It has been suggested that the Serie A outfit may be forced to offload their top talents this January.
Those at Stamford Bridge keen on Kalidou Koulibaly and Dries Mertens who has been linked with a move elsewhere.
Chelsea almost complete a move for Mertens but unfortunately the deal collapse last minutes which they later went on to sign Timo Werner in the imminent window.
We wait to see what how it goes with the next transfer window is fast approaching but next year January.