Thomas Tuchel wants to strengthen his European Champions with up to four new additions at striker, centre back, centre midfield and wing-back.
The consequences could see as many as 11 of Chelsea's fringe players leaving this summer, either on loan or permanently.
Sportsmail takes a look at some of the men who could be on their way out of Stamford Bridge including Fikayo Tomori, Olivier Giroud, Tammy Abraham and Ross Barkley.
Fikayo Tomori is one of 11 Chelsea players who could be set to leave the club this summer
Fikayo Tomori
A £24million move to AC Milan is being ironed out after his impressive five month loan, the England international centre back has been offered a five year deal by the Italians once the pay structure on his fee can be agreed.