Roy Keane says there's plenty of work for Arsenal to do after defeat against Borussia Dortmund in the Champions League.
It's Arsenal's first defeat in Group F and they'll be disappointed given how much they dominated the second half. Lewandowski ruthless with the winner.
It's full-time at the Emirates, and Borussia Dortmund win 1-2 against Arsenal.
We will have 3 minutes added on time at the Emirates