The People reports that Birmingham are ready prepared to make a £8million bid for the winger, while Liverpool boss Roy Hodgson will not be able to go higher than £6million.
Bentley has failed to make the expected impact at Spurs since joining the club in a £15million deal from Blackburn in 2008.
Tottenham boss Harry Redknapp is ready to let the winger leave in the January transfer window.
