The Bosnian striker is looking forward to pitting his wits against 34-year-old Andriy Shevchenko, who is now back at his first club Dynamo Kiev.
Dzeko, 24, said: "Shevchenko was always my favourite player. He was my idol. I met him a few years ago when Wolfsburg played Milan and we exchanged shirts."
While Shevchenko made a name for himself in Italy with AC Milan, he failed to replicate his excellent form at Chelsea, scoring just nine goals in 47 appearances. But that has not dimished him in Dzeko's eyes as a player of top quality. The former Wolfsburg striker, however, is aiming to have better luck in England.
Dzeko added: "He was a fantastic player, he had some tough times in England but that's football.
"England is very different from other leagues and I'll have to get used to it. Hopefully I'll have a lot of success."
Dzeko's only goals since arriving in the January transfer window have come in cup competitions, not the Barclays Premier League. And he could return to the team in the last-16 first leg meeting after having to settle for a place on the bench in the victory against Wigan at the weekend.
Manager Roberto Mancini opted instead for a partnership of Carlos Tevez and summer signing Mario Balotelli but Dzeko does not mind who he plays alongside.
He said: "It's not only Carlos Tevez, Mario Balotelli is a great player and the coach has been playing all of us.
"We have to get used to each other in different games. I think we'll have a lot of success together."