The Spurs man came through a practice game in midweek against QPR having not played since November 2009 due to a career-threatening groin problem.
Gunners manager Arsene Wenger is looking to strengthen his backline in this month's transfer window due to injuries to regular stoppers Thomas Vermaelen and Sebastien Squillaci.
If he wasn't so injury prone, then he'd probably be a decent option.