Wickham is currently on-loan at Sheffield Wednesday.
Poyet told the Sunderland Echo: "Nothing's been decided, although it's not something I would usually comment on. But we haven't even talked about that (a permanent departure).
"He needs to play and after he gets back from loan, we will talk with him as well.
"We knew he needed to play a few games and we are keeping an eye on him all the time."
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