Arsenal 0 Bayern Munich 2: Bayern do not know why Arsene Wenger and Pep Guardiola did not shake hands after the match

Wenger appeared to snub his opposite number at the final whistle after defeat

Arsene Wenger throws the ball back into play during Arsenal's 2-0 defeat against Bayern Munich on Wednesday night (GETTY IMAGES)

From Alan Pardew to Mark Hughes, Arsenal manager Arsene Wenger has a history of snubbing his opposite number at the final whistle, and failed to shake the hand of Pep Guardiola after Bayen Munich's 2-0 Champions League last-16 first-leg win at the Emirates Stadium on Wednesday night - an incident which has reportedly puzzled Bayern officials.

Wenger spoke of his frustration with the theatrics of Arjen Robben in the defeat, saying that the 30-year-old winger used his experience to exaggerate contact throughout the game, especially when fouled by Wojciech Szczesny to concede the first-half penalty, which the goalkeeper was dismissed for.

"Robben certainly made the most of it," said the Frenchman."Robben has enough experience to make more of it. Bayern made the most of every single contact."

German publication Süddeutsche Zeitung have reported that Wenger had no contact with Guardiolla afer the whistle, on the touchline or in the tunnel, and the German club have no idea why.

But the incident may not be as unsavory as it seems - back in 2009, Jose Mourinho did not shake the hand of Sir Alex Ferguson after the first leg of a Champions League last-16 tie, after his Internazionale team drew 0-0 with Manchester United at San Siro. Mourinho hinted at the time that there was no offense meant, and the lack of embrace was because it was only half-time in the tie.