Bakayoko is in London and has been documenting his travels on Instagram Stories, in case any Chelsea fans are anxious about the deal getting done.
Mourinho is in the market for a long-term replacement for Michael Carrick and the "Special One" is looking to sign Matic for the second time after being the man to lure the midfielder back to Chelsea in 2014.
But Bakayoko had already given the game away to fans on Instagram as his latest story showed him leaving a hotel in Chelsea. With Monaco receiving no other significant bids from other clubs, European media reports have stated that the principality club have agreed to sell the player to the Premier League champions.
The 47-year-old Italian, who along with his coaching staff are yet to sign new contracts offered at the end of last term, is hoping to conclude deals for Juventus' Alex Sandro and Spanish global striker Alvaro Morata from Real Madrid.
Chelsea had earlier announced the signing of German youngster Antonio Rudiger from Roma.
Morata would replace fellow Spanish worldwide Diego Costa, whom Conte told at the end of last season that he no longer figured in the manager's plans despite his 20 Premier League goals spurring on Chelsea to the title.