His unwavering belief in his economic principles and unwillingness to compromise see him priced him out of many potential acquisitions, not because the club can not afford them, but because Wenger is unobliging to match their perceived value, often meaning that Arsenal miss out on the upper echelon players.
Merson warned there is no room for complacency, saying: "They need to win this game" as they host Manchester City, their top four rivals.
Wenger is under massive pressure as Arsenal's recent string of bad results have increased the calls from supporters for him to step down at the end of the season, when his contract expires.
"It was very close", Wenger recently admitted in an interview with beIN Sports. But we had an agreement with the player. When you see the names on paper on the pitch I think they are great players like Mesut Ozil, Sanchez, but for me the most important is that we have missed Santi Cazorla. But we had an agreement with the player. With the right nurturing, a club will be getting a decent player added to their ranks and he could be one of those players that comes back to bite Arsenal in the future, as one that got away. "You can ask him", told Wenger to beinSports. I can guarantee we are trying our hardest.
Brendan Rodgers managed to convince the star striker to stay on for one more year by improving his contract, while he was then allowed to sign for Barcelona after the 2014 World Cup.
He has taken his game to another level, though, since moving to the Blaugrana, scoring 113 goals and assisting 65 in 136 appearances as part of a front three with Messi and Neymar. He got rid of all the things that were a handicap for him and today you don't see that anymore. But you want that from an intelligent striker, to provoke.
Lots of fans talk about Arsene Wenger but he is a manager of Arsenal, and I think until the end of the season the players and Arsene Wenger need to fight.