Joe Cole believes Thomas Tuchel's achievements in his first year at Chelsea are comparable to those of Jose Mourinho at Stamford Bridge.
The German marks 12 months in the job on Wednesday and has already delivered Champions League success for the second time in the club's history.
Though Chelsea have struggled to keep pace with Manchester City in the Premier League this season, they are into the Carabao Cup final and also won the UEFA Super Cup.
And former Chelsea midfielder Cole has been thoroughly impressed by the impact Tuchel has made on the club since replacing Frank Lampard in January last year.