Wenger is in the market for "exceptional" talent to bolster his ranks, but the Gunners boss stressed his existing squad will also be key to success in 2013.
Arsenal host Manchester City on Sunday amid increasing optimism that England forward Theo Walcott will soon agree a new contract extension at the club, and Wenger believes it is in the club's interests to get the best out of their current playing staff.
"You are always under pressure to buy in England and (the belief is) every problem has to be sorted out by buying people," said Wenger.
"But you have other ways to sort out the problems inside the club - it is about getting your injured players back, getting everybody focused and motivated.
"It is not only in buying players that you sort out problems, especially from people who live in a different country - they come at the end of January and by the time they adapt, the season is over."
- Sports & Recreation