The 20-year-old Brazilian will cost Spurs in the region of £6million.
"We have now agreed all of Sandro's personal terms - his salary, the length of his contract and so on, although nothing can yet be signed," said Luiz Paulo Chignall, the players lawyer, in The Guardian.
"Sandro is happy and ready to join Tottenham. We liked the offer. All that remains is for Tottenham and Inter to finalise the small details, including the transfer fee. I know that Daniel Levy is speaking to Vittorio Piffero."