Chelsea had wanted Kean, who speaks fluent Portugues to work with Luis Felipe Scolari but Kean said that he had a job to do at Coventry City.
However, this afternoon and only three months after the appointment, Chelsea have sacked Scolari and have put Ray Wilkins in charge on a temporary basis.
Guus Hiddink and Avram Grant, who is also long with the vacant manager's job at Portsmouth, are reported as being on the West London club's short list.