Former Liverpool midfielder Didi Hamann believes FC Koln can upset Europa League opponents Arsenal.

Hamann reckons Arsene Wenger's Gunners are also falling apart after another tough summer and shaky start to the season.

He told Sport Buzzer: “One must clearly say, Arsenal show signs of disintegration under Wenger.

“The debate about Wenger isn't new, but I didn't expect them to start this early in what is still a relatively new campaign.

"This is why Koln's chances against Arsenal are quite good — if they don't show too much respect for the name Arsenal and the individual players.

“Koln is a blank sheet of paper for them. However, there are many players who are experienced on the international stage at Arsenal."