Montreal Impact midfielder Dilly Duka has welcome his club's marquee signing Didier Drogba, saying the Ivorian will help the team challenge for the MLS title.

Drogba was announced as an Impact player on Monday, with the club currently sixth in the MLS Eastern Conference.

"When you bring in a player like Didier Drogba, everyone knows he's a global superstar," Duka told reporters on Tuesday.

"Everyone has been watching his career. This is a player that you're almost guaranteed that he's going to come and help us and push for a title."

Montreal Impact head coach Frank Klopas believes Chelsea legend Drogba will add a new element to his side's attack, as well as bring with him extensive experience and leadership.

"He's going to improve us because of his ability to hold balls up there when we're under pressure, to give us a different presence in the box with his strength and his ability in the air," Klopas said.

"There are different kinds of characteristics that he brings, but it's also his leadership and his quality."