We will definitely finish top of our Europa League group - but our unbeaten record in the competition has gone.
A second-half penalty condemned us to defeat, but Red Star Belgrade’s draw with BATE Borisov means we can’t be caught by them or Cologne.
The German side’s winner was not without controversy as Sehrou Guirassy went down inside the box with Mathieu Debuchy in close attention.
Calum Chambers made his comeback from injury
The referee deemed it worthy of a penalty and Guirassy picked himself up to slam the spot-kick past David Ospina.