Gedson Fernandes is expected to arrive at Tottenham’s training ground on Monday ahead of completing an 18-month loan deal from Benfica.
Spurs will have an option to buy Fernandes for 65m euros (£56m), after Benfica accepted a higher loan fee for the 21-year-old.
Personal terms between the player and club are not expected to be a problem.
Tottenham want to sign a midfielder following the injury to Moussa Sissoko, who has been sidelined for three months after undergoing surgery to the medial collateral ligament in his right knee.
Chelsea have also been interested in signing Fernandes and offered an 18-month loan deal with an obligation to buy for £55m, provided the player features in at least half of the games during the loan spell.
West Ham also offered a one-and-a-half-year loan deal, but their obligation to buy amounted up to £33m and the percentage of games to trigger the clause would be less than Chelsea’s.
Fernandes’ release clause is £102m but Benfica have conceded they will not get close to that figure for a player who is out of favour and is reported to have fallen out with head coach Bruno Lage.