The Ivorian forward moved to Stamford Bridge 10 years ago, winning two Premier League titles under Mourinho.
Voted as the club’s greatest ever player, the 36-year-old left West London in 2012, having scored the winning penalty to gift the Blues the first Champions League trophy of their history, although he returned at the beginning of this season - with Mourinho looking for Drogba to add experience and leadership to an increasingly young squad.
He netted his first goal of the season on Tuesday night, with a penalty against Maribor enough to open his tally in front of the home fans, and, although he has been kept out of the first-team squad due to the imperious form of Diego Costa, he has still had a big impact since his return.
With the Blues looking strong favourites for the Premier League title, many have taken to compare the current squad with those which came before, especially the 2004-06 squad, which won two league championships under the Portuguese coach.
Having been part of both squads, Drogba told the official Chelsea website where he believed the differences and similarities were amongst the players.
“This team has different strengths, different qualities,” the forward said.
“But it’s still as strong and as good as the previous ones. We can still improve because the team is young and that’s what I’m focusing on.
“Chelsea will always be at this level because of what the players before us created: the habit of winning trophies, winning big games, being in the last four or the final. Here from the first season you have to win.
“There are big expectations. This is a good habit and I think this is a legacy.”
The biggest apparent difference between the two squads is the defensive ability of the current side not matching up with Mourinho’s original ideal. Having conceded just 15 goals in the 2004/05 Premier League season, the Blues have already conceded more than half of that tally in just eight games this season, although they look well on their way to breaking the 72-goal record they set that season - having netted 23 times already this campaign.