#3 Hakim Ziyech
The case of Chelsea's Hakim Ziyech is a difficult one to explain. While he has produced some good performances, the forward has never looked settled in England.
Ziyech joined Chelsea from Ajax last summer for £36 million. The Morocco international had excelled with the Eredivisie giants, and his creativity and technical qualities were seen as good additions to the Chelsea side. Ziyech has looked good at the Blues, but he has largely struggled for consistency.
The 28-year-old won the Champions League last season, but was linked with a move away from Chelsea this summer. Ziyech has made six appearances in all competitions for the Blues this season, scoring one goal. A move to a less physical league could help him rediscover his mojo.
#2 Ruben Loftus-Cheek
Ruben Loftus-Cheek was once regarded as Chelsea's future. Now, he is fighting to remain at the club.
Loftus-Cheek's talent has never been in question. A physically gifted player with quick feet, the midfielder made his name during a loan spell with Crystal Palace. However, the England international has been unlucky with injuries, which have limited his development.
Loftus-Cheek has been given opportunities at Chelsea, and he has done well when called upon. However, the quality of midfielders that Chelsea possess means that the likes of Loftus-Cheek and Barkley are unlikely to make it as first-team starters at the club. The 25-year old will not be short of suitors if he decides to leave Chelsea in January.
#1 Callum Hudson-Odoi
Like Ruben Loftus-Cheek, Callum Hudson-Odoi is a product of Chelsea's famed Cobham academy.
Hudson-Odoi grabbed the attention of the football world when Bayern Munich displayed a serious interest in signing him in 2019. Chelsea rebuffed their offers, and offered Hudson-Odoi a new, much-improved contract, which he signed to extend his stay at the club.
However, the England international has found game time difficult to come by under Chelsea's current manager Thomas Tuchel.
Hudson-Odoi has often been utilised as a wing-back by the German tactician, who clearly is struggling to find a place for the 20-year old in the Chelsea first team. Cobham graduates like Fikayo Tomori and Tammy Abraham are excelling at other clubs, so Hudson-Odoi could soon join that list. Borussia Dortmund and Bayern Munich have once again been linked with the England international.