More recently, pro-Wenger fans clashed with those calling for his resignation during Arsenal's 2-2 draw with Manchester City on Sunday.
The Gunners have some catching up to do if they're to secure a top-four finish - they now sit sixth in the Premier League table, albeit with one or two games in hand over their top-four rivals - but even if they achieve that objective it's unlikely to appease the frustrated Emirates Stadium faithful.
Sitting sixth and seven points adrift of fourth-placed Manchester City, Arsenal are facing exclusion from next season's Champions League.
Wenger admitted after the game that he was unaware as to who was the team's designated leader following Koscielny's withdrawal.
He said: "I think this season he has found more determination, a more aggressive attitude".
The Gunners are now sixth in the table, seven points adrift of fourth placed City, with a game in hand.
When asked who had been made captain in place of Koscielny during the half-time break, Wenger told a news conference: "I don't remember".
Uncertainty about the futures of Chilean star Alexis Sanchez - who has cast a glum figure of late - and German World Cup winning playmaker Mesut Ozil has also affected the club.
"It's all in our hands now and it's how we respond, how we maintain that kind of focus we had against City that will define the end of our season".
Former Arsenal defender Sol Campbell expects the club's under-pressure manager will accept a new two-year deal to remain in the hot seat.
"What is important. I think if I've shown one thing in my 20 years, it's that I care about Arsenal, I care about the next game, and I will continue to do that as long as I'm here".
"You just want the fans to stand behind the team and that's what they did". Honestly", he said. "Why should I waste energy on that? "I can understand because football is free for everybody to have opinions so you cannot stop that".