Benfica said they have agreed to loan Brazilian striker Carlos Vinicius, the top scorer in the Portuguese league last season, to Tottenham for a season.
The club gave details of the deal to the Portuguese stock market authorities on Thursday.
They said Spurs will pay 3 million euros ($3.52 million dollars) for the loan and will have an option to buy the 25-year-old forward for 45 million euros.
Vinicius arrived at Benfica from Napoli, where he never played a competitive game, in July 2019 and led the Portuguese league last season with 18 goals.
He played at Rio Ave and Monaco on loan from Napoli.