Klopp: Arsenal deserved their win...The Borussia Dortmund coach concedes that his team were not good enough to get anything from Wednesday's Champions League encounter, in which they lost 2-0 to the Gunners...

Yaya Sanogo gifted the Premier League side an early lead before Alexis Sanchez made it two after the break, with the German side, Klopp admits, simply not good enough.

"It was the worst possible start to concede such a quick goal," he told reporters. "There were situations and moments when we did what we wanted but those periods were very short.

"Too many times we were not that great and Arsenal were the deserved winners. We just weren't good enough. 

"We could have done better; we were not courageous. There are 1000 reasons why we were not that good. We have to work.

"That's the plan. Work always works in life. We don't party between the, we always try to improve things.  

"We have to admit we are not as confident as in positive periods but you can work hard to get to deserve the luck in life. We will get it back. We don't need the perfect football, we just need good results."

Dortmund remain first in Group D with 12 points from five matches, with Arsenal occupying second spot with 10 points.