Video emerges of Arsenal playing 'Wengerball' against Barcelona in 2010/11 CL

Arsenal v Barcelona - UEFA Champions League

Unai Emery has big problems at Arsenal.

Thursday's embarrassing 1-0 defeat away to BATE Borisov in the Europa League was undoubtedly the Spaniard's worst night as manager.

Arsenal fielded a relatively strong side in Belarus yet lost to a group of players who are only worth £200,000 and hadn't played competitive football in two months.

What's most concerning about Arsenal at the moment is the lack of creativity and spark they're showing in the final third.

Alex Iwobi and Henrikh Mkhitaryan started against BATE but created barely anything. Their performances made Emery's decision to leave Mesut Ozil and Aaron Ramsey at home look bizarre.

Arsenal's style has noticeably changed under Emery and the way they're playing at the moment has forced some sections of the club's fans to miss Arsene Wenger.

Wenger famously created 'Wengerball' during his time as manager in north London and at their best, Arsenal were impossible to deal with.

One game that sticks in the memory for Gooners is the 2-1 win over Barcelona in the 2010/11 Champions League last 16 at the Emirates Stadium.

Arsenal v Barcelona - UEFA Champions League

Cesc Fabregas, Robin van Persie, Samir Nasri, Theo Walcott, Jack Wilshere and Alex Song all started that game and Barcelona simply couldn't handle their pace, passing and movement.

Barcelona took the lead through David Villa, but stunning team goals from Van Persie and substitute Andrey Arshavin sealed a famous victory.

Arsenal were devastating on the attack and the video below shows what 'Wengerball' looked like in full swing.

How Arsenal fans must wish their current crop of players were capable of playing that kind of football against Europe's best.

Wenger hailed his players after the game for sticking to their philosophy and beating Barca at their own game.

"I am very proud for Arsenal because everybody urged us to play differently to our nature," said the Frenchman. "It feels good.

FBL-ENG-PR-ARSENAL-WENGER-FILES

"More than pride, it can strengthen the belief in our philosophy and that's important. It is very promising for our future. The target is to keep these players together.

"We played against the best team in the world and we managed to beat them. That doesn't take anything away from Barcelona; they are still an exceptional side.

"It was a special football night, an exciting night and I thank the fans because we suffered at times but they were behind us."

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