The Belgian youngster has enjoyed a fine season so far at Goodison Park and is currently second in the goalscoring charts in the Premier League behind Leicester City's Jamie Vardy.
Lukaku recently became the first Belgian player to score 50 Premier League goals, while he also joined the impressive list of players to score 50 Premier League goals before their 23rd birthday.
The 22-year-old has been impressive since joining the Blues, after things had previously failed to take off at Stamford Bridge.
Drogba has said that he has told Lukaku that he is on the way to becoming one of the greatest in the league.
“I told him he’s on the way to becoming one of the greatest in this league,” the Liverpool Echo reports him saying.
“I’m not surprised that he left Chelsea because it’s very competitive. To get his confidence back like he has now, he had to go and play for a team like Everton.
“To play like he is now you need the confidence of the manager and with Roberto Martinez he’s got it.”
Given how long Lukaku has been a presence in the Premier League, it is often easy to forget he is still only 22-years-old.
This season has been his most consistent so far, with him starting to show the kind of form that justifies the big price Everton paid Chelsea for his services.
If he continues as he has, there is no doubt that Jose Mourinho will come to rue that decision, especially with Diego Costa struggling this year.