Already this season Chelsea have seen a central midfielder leave the club for a Premier League rival. Jorginho ultimately left the club in a deal that worked for all parties when he joined Arsenal.
The Italian earned the Blues a £12million package by moving six months before his contract expired while ensuring he has a role to play in a team competing for the Premier League title, while the Gunners got an 18-month addition to shore up their depth.
Chelsea are set to be faced with a number of similar decisions moving forward as the club look to stop their stars from entering the final two years of their contracts. Already the Blues have fallen victim to losing Antonio Rudiger and Andreas Christensen, while N'Golo Kante and Thiago Silva entered the final year of their deals this season, as well as Jorginho.