Bakayoko underwent a medical at Cobham yesterday before he was officially unveiled as a Chelsea player today.
Though the transfer has now gone through, there remains question marks over Bakayoko's current physical condition with reports earlier in the week suggesting Antonio Conte does not expect the twenty-two year old to be available for Premier League selection until September. I have grown up watching Chelsea.
"I am now looking forward to evolving under this fantastic coach and alongside so many great teammates".
Matic joined Chelsea from Benfica back in 2014 and has made over 100 appearances for the club since moving to England.
Bakayoko shot to global reckoning for his performances with Monaco last season as the principality club stormed to a first French Ligue 1 title in 17 years.
The midfielder will now be put through his paces to make sure there are no lingering problems after struggling with a knee injury towards the end of the last term.
Tiemoue Bakayoko has sent the internet into meltdown over the last 24 hours ahead of an expected Chelsea medical. He enjoyed a meteoric rise to prominence at Monaco last season after two years of being viewed as an unfulfilled talent, and he only earned his first global cap for France in March.
He was instrumental in Monaco's Ligue 1 title triumph last season and helped them to the semi-finals of the Champions League.
Jose Mourinho's side were also heavily linked with a move for the player, but he has opted to move to London with Chelsea instead.
While Kante will provide the destructive and energetic side to midfield play, Chelsea will look to Bakayoko for more expansive passing, as well being a physical presence.
The six-time English champions head to Asia later this month for a pre-season tour, before taking on Arsenal in the Community Shield on August 6, and kicking off their Premier League title defence against Burnley six days later.