Despite FC Bayern München's dominance over Arsenal in recent season, winger Arjen Robben believes the Gunners will provide them with a stiff challenge in the Champions League last 16.
The two clubs have gravitated towards each other in Europe's elite club competition in recent years and this will be the fourth time they have met in the last five seasons.
So far, the Gunners have come off second best on every occasion, getting knocked out in the round of 16 in both 2013 and 2014, while also struggling against them the group stage last season, including a mammoth 5-1 defeat.
They are set to do battle once again on Wednesday in the first leg of this season edition of the last 16, but Robben feels this could be the strongest Arsenal outfit they have faced.
"I think they have improved again compared to last year and, of course, we have faced them over the last few years and have always won or gone through to the next round," he said.
"But I think this is maybe going to be the most difficult one because of their status at the moment.
"Their level has risen again. They are a threat to everybody who is in the Champions League, they can make it difficult for everyone. We are confident, of course, but it's going to be a 50-50 one."
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