Arsenal signed Alexandre Lacazette in a club-record £52m deal from Ligue 1 side Lyon to improve their attacking options.
They ultimately left it too late in a move for Monaco's Thomas Lemar, who was subject to a £92 million bid that was subsequently accepted but as per as Wenger, the France global didn't fancy the move and it never materialised.
Arsenal were never credited with an interest in Drinkwater, who will be little more than a rotation option at Chelsea, and Merson is anxious that his former side will soon fall away from their London rivals and the rest of the fabled "top six".
"I know we live in an era of transparency but at some stage, to respect everybody, you have to not talk too much about that".
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Bavar (which means "belief") is Tehran's first long-range missile defence system, and is set to be operational by March 2018, he added.
"But I think the fans are losing all respect as well".
And Merson believes the situation at the Emirates will only get worse. Many of those players do not seem to realise how lucky they are to be at the club. I'm disgusted. It's just an embarrassment from top to bottom.
"So Alexis Sanchez will go, like Mesut Ozil, in the final year of his contract, or you think that during the season you find a way to extend the contract, or at the end of the season the players go for free".
On a more positive note, Wenger was asked about French and Arsenal legend Thierry Henry, to which he replied with a simple declaration of: "The best player I managed at Arsenal".
"Then he pays £50-odd million for a striker and leaves him on the bench in the biggest game of their season. It's unbelievable. Extraordinary. But it will only get worse".