The Brazilian striker has copped plenty of flak after just one league goal since a club-record £40million move from Hoffenheim in July.
Ahead of facing Crystal Palace, Bruce could be tempted to unleash fit-again Gayle against his former club instead.
This is despite the fact he has been crocked for six weeks with a hamstring problem.
Bruce said: “We haven't really seen him but when we have, I have been particularly impressed with him.
“I've always been a big admirer and tried to buy him three times.
“I've always said I wanted to keep him because he'd have a part to play."
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