The pair have endured a frosty relationship over the years with Merson constantly bemoaning Arsenal and Arsene Wenger on Sky Sports.
Reports suggest 49-year-old Merson could make a return to football with Welsh fourth-tier team Caerau but Wenger had no time for questions about lower league football when he was previewing his side’s trip to Watford on Saturday (5.30pm).
When asked to comment on the 49-year-old Sky Sports pundit making a return to the game Wenger snapped: “We speak about professional football here.”
His comments come after Merson took aim at the Frenchman by claiming the Gunners could win the Premier League if he was a bit more like Harry Redknapp.
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“People say he’s [Redknapp] a wheeler-dealer and it’s so disrespectful,” Merson said on Sky One’s A League of Their Own.
“Tactically, he’s one of the best I’ve worked with. If Arsene Wenger had Harry Redknapp’s tactical nous, Arsenal would win the league.”
Wenger and Merson’s war of words stems from comments the latter made about the Gunners in 2014 when he described them as playing like an under-12 team after throwing away a three-goal lead against Anderlecht.
And the French boss hit back with the response: “These debates that I hear are a joke, a farce.
“People who have managed altogether zero games, they teach everybody how you should behave. It’s a farce.
“If I really cared, do you think I would have survived for 18 years? I managed Paul Merson…I tried. I’m not interested in him.”