Last month, it was claimed that the Portuguese giants had told the Premier League outfit that they would have to pay a fee of £26m in order to sign their captain.
According to A Bola, Spurs have opted to meet their demands by lodging an offer in the region of £27m for the Portuguese international.
Silva has a release clause of £39.5m in his contract, but it has been claimed that Sporting are willing to accept a lower fee for the 28-year-old.
Last season, he made 32 starts for Sporting in all competitions, while he has just represented his national team at the Confederations Cup.
Silva was linked with a switch to Leicester City ahead of the previous campaign, but he instead extended his spell in Lisbon to a 10th year.