Zamora's stock has risen rapidly this season after a string of impressive displays that have helped the Craven Cottage club reach the Europa League final.
Three Lions chief Fabio Capello has overlooked the uncapped Zamora for his previous squads.
Hitman: Fulham striker Bobby Zamora
But according to the Sunday Telegraph, Zamora has received a letter from the FA requesting he is available for the provisional squad - which is named on Tuesday.
Zamora - who has hit 18 goals this season - is facing a race against time to be fit for Fulham's date with destiny against Atletico Madrid on Wednesday due to a long-term Achilles injury.
But should he shake off the complaint, Zamora is expected to be handed the chance to cement his place in Capello's final 23-man squad in the forthcoming friendlies against Mexico and Japan.
Capello must name his World Cup squad by midnight on June 1.
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