Atletico Madrid are pushing hard to land England ace Kieran Trippier from Spurs for £25million.
Right-back Trippier, 28, has 16 caps and made 36 starts for Tottenham last term, including the Champions League final.
But boss Mauricio Pochettino is willing to sell World Cup hero Trippier, who has lost his place in Gareth Southgate's squad.
Pochettino has two other right-backs in Ivory Coast international Serge Aurier,26, and talented Kyle Walker-Peters,22, coming through.
Spanish club Atletico are now stepping up their interest in Trippier, who cost Spurs £3.5m from Burnley in June 2015.
Atletico need a new right-back after veteran Juanfran,34, left this summer at the end of his contract.
Manchester United had previously been linked with Trippier but they have since signed Aaron Wan-Bissaka from Crystal Palace for £50m.
It has left Spanish club Atletico in pole position and they have cash from Antoine Griezmann's £107m sale.
Walker-Peters made 10 appearances for Spurs last term and signed a new deal last December until 2023.
He showed his potential by providing three assists in a 5-0 home win over Bournemouth on Boxing Day.
His games also included away at Barcelona in the Champions League and starting on the final day in the Premier League season.
The England U21 international can now expect significantly more game-time this coming season if Trippier goes as mooted.
Two summers ago, Walker-Peters starred for winners England at the U20 World Cup ahead of Liverpool's Trent Alexander-Arnold.
