Napoli coach Luciano Spalletti has emerged as a target for Chelsea.
Chelsea sacked Graham Potter on Sunday night after just seven months in the job.
The Telegraph says Spalletti is under consideration at Chelsea, having led Napoli to the top of the Serie A table and into the quarterfinals of the Champions League.
Eintracht Frankfurt coach Oliver Glasner is also a target, along with free agents Luis Enrique, Julian Nagelsmann and Mauricio Pochettino.
Bruno Saltor is currently in charge of Chelsea as caretaker.