The Gunners are in danger of losing their two stars players before the end of the season, with both Sanchez and Ozil entering the final six months of their deals at the Emirates Stadium.
Wenger, though, believes that can come as a benefit to the London giants, claiming footballers are more likely to perform at their very best when their futures are undecided.
"When you pick a team you do not necessarily look how long a contract is," said Wenger.
"The shorter the contract is, the more hungry the players are usually. The hunger index drops with the length of the contract."