Drogba is in superb form and scored both goals in Chelsea’s 2-2 draw with Atletico Madrid in the Champions League on Tuesday.
He told Sky Sports: “I think we were also thinking about Manchester United tonight but we did everything we had to do today.
“Now we can focus on Sunday because it’s very important to beat them (United) at home.
“We have to show different qualities and be better than today. Today was far from a good performance, we played well but were not good enough to win.”
