Reports emanating from Turkey last week claimed West Brom had agreed a deal to sign the Besiktas shot-stopper in the summer.
McGregor only joined Besiktas last summer after leaving Rangers and he has impressed during his time in Turkey.
Clarke has moved to dismiss the talk that a deal has been agreed to bring McGregor to The Hawthorns at the end of the season.
"That is just a load of rubbish," Clarke is quoted as saying in the Daily Record.
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