The Portuguese has warned a club legend that there are still issues to be addressed at the back before the Blues can fight for the title again
Chelsea are not quite ready to challenge for a place in the Premier League's top two, according to Jose Mourinho, who sees top sides exploiting defensive weaknesses in Frank Lampard's team.
A 2-0 victory over Crystal Palace at Stamford Bridge on Saturday saw the Blues rise to third in the table, level with second-placed Leicester on 26 points.
Lampard's men are now eight points behind runaway leaders Liverpool after 12 fixtures, with a trip to the Etihad Stadium to face reigning champions Manchester City up next.