Arsene Wenger’s Arsenal secured top spot in Europa League Group H on Thursday despite slumping to a 1-0 defeat at Cologne, while AC Milan reached the last 32 by thrashing Austria Vienna.

Frenchman Wenger made 11 changes to the team that beat Tottenham Hotspur in last weekend’s north London derby, with starts handed to Olivier Giroud, Jack Wilshere and Danny Welbeck.

But the Gunners succumbed to a 62nd-minute penalty from Sehrou Guirassy after the French striker tumbled to ground inside the area under a challenge from Mathieu Debuchy.

Cologne, winless through 12 Bundesliga matches this season, climbed to second with one match to play, as a 0-0 draw between BATE Borisov and Red Star Belgrade in Belarus confirmed Arsenal’s status as group winners.

“We’ve lost a game in which Cologne had one shot on goal other than the penalty,” said Wenger. “We were always missing that little something to get the goal. Cologne defended with spirit and for them it’s turned out to be the perfect night.”

Seven-time European champions Milan wrapped up first place in Group D with a 5-1 win over Austria Vienna at the San Siro.

Christoph Monschein put the visitors ahead in Italy, but Vincenzo Montella’s team roared back with Andre Silva and Patrick Cutrone both netting twice along with a goal from Ricardo Rodriguez.

Atalanta sealed their spot in the knockout phase as Bryan Cristante and Andreas Cornelius notched two goals apiece to thump a listless Everton 5-1 at Goodison Park.

Robin Gosens added another with a terrific dipping volley, with Sandro Ramirez scoring his first Everton goal as the Toffees crashed to a fourth defeat in five group outings.

Mario Balotelli scored twice as Nice moved into the last 32 following a 3-1 victory over Zulte Waregem of Belgium, with Lazio dropping their first points in Group K after a 1-1 draw at home to Vitesse Arnhem.