Last season Robert Lewandowski proved just how good he was.
A marvellous display against Spanish giants Real Madrid in last year's semi-final, which saw him score four goals, will never be forgotten by the Dortmund faithful.
Great in the air and great with the ball at his feet, the Polish international has fantastic quality in-front of goal.
Dortmund will once again be reliant on the goals of Lewandowski if they are to reach the final this year.
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