The 31-year-old Sweden international is yet to feature for the Gunners since he arrived on the final day of the January transfer window.
Kallstrom signed for Arsenal with a back injury, but speaking ahead of his side's trip to White Hart Lane, Wenger revealed the midfielder is back in training.
"Kallstrom joined the normal training group on Thursday and Yaya Sanogo, too," said Wenger.
"I will have to decide if Kallstrom is OK to be in the squad on Sunday. I will see how he looks. It is not impossible."
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