In the summer, Wenger only bought in just one player to strengthen his squad and his philosophy behind it, along with during the season, is that too many changes can disrupt the mindset of a squad.
"When you change more than three players from game to game you take a technical risk," he said on French radio.
"The balance of a team doesn't depend on one player but if you change three it's a grave risk, not only in a game but also in signing players.
"You change three players and bring in three or four new faces who do not know your playing philosophy and it can hit your team like the flu.
"Sometimes when the players are extremely intelligent they adapt very quickly and it can also click very quickly. But it's rare."