article_snippet.sent: Bayern striker Robert Lewandowski pictured in training ahead of taking on Porto .
article_snippet.sent: Bayern Munich's Dante (left)controls the ball in training as the club prepare for their the Champions League clash .
article_snippet.sent: Philipp Lahm will look to lead Philipp Lahm team into the semi-final of the Champions League on Tuesday .
article_snippet.sent: Bastian Schweinsteiger (left) trained with Bayern on Monday in a bid to prove fitness for Porto .
article_snippet.sent: Xabi Alonso (left) gestures during Bayern's training session on Monday .