The Ivory Coast international striker has failed to find the net on a regular basis since arriving from Lille in 2011, scoring nine Premier League goals in 46 appearances.
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"We are at the moment close to an agreement with a club where he should go," Wenger told the club’s official website following Saturday’s 2-2 draw with Napoli at the Emirates Cup.
Wenger also used the post-match press conference to give an update on the futures of Nicklas Bendtner and Marouane Chamakh, linked with the likes of Malaga and Crystal Palace respectively.
The Frenchman added: "Bendtner we are nowhere. At the moment he is completely here.
"Chamakh might go somewhere, it will be decided in the next 48 hours."