The Arsenal boss has spoken about the tight offside call for Berahino this afternoon.
Arsenal are celebrating a win over West Brom today after a goal from Danny Welbeck did the business at The Hawthorns.
It was a tight and tense affair, which in the end was settled by a wonderful piece of play by Santi Cazorla, duly dispatched by the England international.
But it could have been a lot different. Despite Arsenal's dominance The Baggies had the odd moment they were also denied one, wrongly, after Saido Berahino burst through on goal.
The striker, who recently earned a call-up for England, was played in by Craig Gardner, beating the offside trap to race through on goal.
However the flag went up and Arsenal goalkeeper Emiliano Martinez was spared a one-on-one situation with England's top scorer.
Of course Berahino might have missed or Martinez might have saved it, but the fact we will never know is certainly irking Baggies fans.
After the game it was certainly one of the main talking points with fans, pundits and managers - including Arsene Wenger.
The Arsenal boss seemed to agree that Berahino was offside before back tracking, and given it the trademark 'I didn't see it' ritual.
"I think - from the bench - it’s impossible to say. Maybe Koscielny covered the view I had when I saw it."
Lucky for Arsenal, either did the referee's assistant.