Chelsea legend Ray Wilkins feels the club's sacking policy will soon leave them with no-one to turn to.
Rafa Benitez is in charge until the end of the season but Wilkins suggested Chelsea are running out of options for the permanent managerial post.
"If Pep Guardiola was to come in and was sacked then where do you go?" Wilkins said.
"He is supposedly the best on the planet. He is a young man of 41. You have Mourinho out there but would Jose come back? I have no idea."