Madrid welcome the Turkish outfit in the first leg of their quarter-final meeting in midweek, with the Spanish club among the favourites for the competition.
"Those two players (Drogba and Sneijder) have brought a new quality to the team, but they have other great players," he told UEFA's official magazine.
"For example [Hamit] Altintop, who I know, and who scored in their last match. It is always difficult to play against Turkish teams, so we must focus on the whole team and take it seriously, not just focus on Drogba or Snejider. If we do, I'm sure we'll get to the semi-finals."
Madrid overcame Manchester United in the previous round.