Gotze and Lewandowski will be keen to atone for wasting first leg chances which might already have had the tie sewn up
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The hosts need a cushion of goals before the second leg at Signal Iduna Park, where their visitors are insatiable scorers
Bayern Munich have not looked half as imperious when stepping up outside of Bundesliga action this season
The Blaugrana will also have old-boy Zlatan Ibrahimovich to deal with after UEFA downgraded his last-round suspension