Birmingham City manager Lee Clark has dropped Nikola Zigic from his squad following a lack of effort by the striker in training.
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Clark, 40, said the Serbian had originally been told he was starting Saturday's game against Watford.
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"I've finished training absolutely disgusted. I can't just sit and take that, the fans need to know," he said.
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"They pay his wages and what he dished up is the worst effort I've seen in 25 years of professional football."
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Clark continued: "The absolute minimum is to give everything every single day.
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"Is it because he hasn't been starting? Is that what you do? Down tools and stop trying? The football club deserves more, the fans deserve more."
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The ex-Huddersfield manager has not started Zigic, 32, since he scored and was later sent off in the defeat by Bolton in December.