The Eagles' 24-year-old hitman is getting increasingly frustrated at his lack of regular starts under new boss Neil Warnock.
The forward is a clinical finisher but fears Warnock prefers to use bigger men up front such as Marouane Chamakh, even though he only has one goal this term - and that came back in August.
Gayle has been in and out of the side this term despite scoring six goals, including a hat-trick in the League Cup against Walsall.
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