Lampard said: "Didier is the best striker I've played with, simple as that. Wayne Rooney is also a world-class player, who creates and scores goals, but as an out-and-out striker there's no one better than Didier.
"He's got an all-round game, with pace and power, he's a team player, and scores goals with his head and his feet. He's the best. He's a great lad to have in the dressing room and always fights to the end.
"The way he's played in the last 18 months there's no one better in world football and it's really important he stays. You want players like Didier Drogba alongside you, that's for sure.
"He'll make his own decision, but when playing for us, even with the controversy that's surrounded him in the last week, he's put in a couple of performances that have shown what he's all about."