Stefan Effenberg has expressed his belief that Bayern Munich must "defend deeper" in the bigger games if they are to win the Champions League this season.

Pep Guardiola's men reached the semi-finals last term, where they were defeated 5-0 on aggregate by eventual winners Real Madrid.

To avoid a similar scenario playing out this time around, the club's former midfielder has insisted that Guardiola should look to "change his system".

"If Guardiola wants to win the big title in the Champions League, he has to change his system," the 2001 Champions League winner told Sky Deutschland.

"When you meet the big team like Barcelona, Real Madrid or Chelsea, you have to defend deeper and play it a bit safer."

Tomorrow night, Bayern will take on Shakhtar Donetsk in the first knockout round of the competition.