As Johan Djourou looks destined for the exit door, perhaps Toure would bolster Wenger's side as they look to end their trophy drought.
After starting the season well under the influence of Steve Bould, keeping clean sheets in their first three games of the season, Arsenal have struggled to maintain consistency at the back.
Kolo Toure is available on a free transfer at the end of the season as Roberto Mancini isn't likely to extend his contract.
Toure has much needed experience having been a fundamental part of the 2003/04 Invincibles, partnering Sol Campbell. And someone with his leadership skills, experience and even experience of winning trophies with Arsenal could prove to be extremely beneficial for the club.
With Vincent Kompany currently injured, Toure has put in some very impressive displays for Manchester City, so it's not impossible that Mancini won't renew his contract at the Etihad.
Either way, it seems that at-least one of Joleon Lescott or Touré will leave the Etihad this summer, or possibly both.
Ultimately though, would he be welcomed back by the fans? After leaving for a team who have now eclipsed Arsenal in terms of league standings, many have called him a traitor or mercenary, despite having made 326 appearances for Arsenal between 2002-09.
After he left, he cited his strained relationship with William Gallas as the main reason he quit the Gunners. However, Gallas now plays his trade at Arsenal's north London rivals Tottenham Hotspur.
His presence may help to ease the pressure on the current trio of Vermaelen, Koscielny and Mertesacker, and potentially being available on a free transfer may make this deal too tempting to resist for Arsene Wenger.
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