The Daily Mail says sponsors Zoopla have told West Brom to axe Anelka or lose their £3million deal.
The former France striker should know early next week whether the FA will charge him over the quenelle gesture he made after scoring against West Ham three weeks ago.
According to a report in Marketing Week, the property portal has contacted the club to voice their dissatisfaction following Anelka's actions, which some say carry anti-Semitic overtures.
Zoopla, owned by Jewish businessman Alex Chesterman, say Anelka must be dropped for Monday night's game against Everton and have told the club they will want their name removed from the club's shirts immediately if he plays.
A club spokesman said: "West Bromwich Albion will be making no further comment until the Football Association have concluded their investigation, and the club their own internal enquiry, into the matter."
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