Arsenal host Manchester City tomorrow 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."
Arsenal have been linked with a string of players this month, among them Barcelona forward David Villa, Atletico Madrid frontman Adrian Lopez and Wigan midfielder James McCarthy.
Wenger knows there is no shortage of players falling over themselves for the opportunity to head to Emirates Stadium, and that the club can afford to do a deal if they find the right man.
"We have no problem with people wanting to join us. I would like to give you my phone for 24 hours, and you would see that," Wenger said.
"Can we afford them? Most of them, yes; a few of them, no. Can you afford Lionel Messi today? Certainly not, but we can afford 90 per cent of them."
The likes of midfield duo Abou Diaby and Tomas Rosicky are back from injury.
"If you look at our squad, it is quite complete," Wenger added. "We still work on the transfer market as well, but we do not want to bring in average players. We only want to bring in an exceptional player, and at the moment we have not found him."