Both David Moyes and Marouane Fellaini will reportedly leave Everton at the end of the season.
The Blues manager will not renew his contract when it expires in the summer with Belgium midfielder Fellaini also set to move on as he seeks Champions League football, according to the Daily Mail.
The report claims that Fellaini, who is Everton's top scorer with 11 strikes this campaign, has a £23m buyout clause in his contract that would allow him to leave if met.
Chelsea have long been linked with the former Standard Liege man and he is set to depart Everton in the close season, with Moyes also seeking a fresh challenge.
Moyes has been with the Blues for over a decade, while Fellaini was brought to Goodison Park in August 2008 for a club record fee of £15m.