Hansi Flick wants every member of his Bayern Munich team to work on turning their defensive struggles around as they prepare for a Bundesliga clash with in-form Freiburg.
Bayern saw their hopes of a second successive treble ended on Wednesday after they suffered a shock DFB-Pokal exit at the hands of 2. Bundesliga promotion challengers Holstein Kiel.
They conceded a 95th-minute equaliser to make it 2-2 at the end of normal time, with the second-tier side going on to prevail 6-5 on penalties.
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Flick's side have not kept a clean sheet since the Champions League win over Lokomotiv Moscow on December 9, while the second of just two shutouts in the Bundesliga came back in the 5-0 defeat of Eintracht Frankfurt on October 24.