Bayern Munich's Robert Lewandowski expecting tough test vs. Arsenal

Bayern Munich striker Robert Lewandowski expects "a really difficult task" in their Champions League round-of-16 tie against Arsenal next month.

Lewandowski, 28, extended his contract with the Bavarians until 2021 last month and has scored against Arsene Wenger's side in the past for both Bayern and Borussia Dortmund.

This will be the fourth meeting between the two sides at this stage and Bayern have progressed on each occasion -- in 2004-5, 2012-13 and 2013-14.

"We must have every player available for the most important phase - that is my biggest wish," Lewandowski told Sport Bild. "And we also need to be on top form when it matters most.

"But firstly we need to concentrate on Arsenal -- that's going to be a really difficult task."

The first leg will be played at the Allianz Arena in Munich on Feb. 15, with the return taking place at Emirates Stadium in London on March 7.

Poland captain Lewandowski has scored five of Bayern's 14 goals during this campaign, including decisive goals at PSV Eindhoven and at home to eventual group winners Atletico Madrid. The German champions failed to top their group for the first time since 2009-10 when they went on to reach the final under Louis van Gaal.

Meanwhile, Lewandowski has told Sport Bild that a move to Barcelona or Real Madrid would not have been a "step up" from German champions Bayern.