Cape Town - Bayern Munich director Matthias Sammer is expecting a tough match Champions League match against Shakhtar Donetsk.
"We have to produce a top performance. It's going to be very, very difficult. But we are ready," he said.
Coach Pep Guardiola said after his side's hard-earned 3-1 win in Hannover at the weeekend that the match against Donetsk is "a final, we must win."