TOTTENHAM are reportedly struggling to agree a payment structure for Sporting Lisbon right wingback Pedro Porro.
Spurs are keen to sign the Spaniard, 23, for £40million in the January transfer window.
Tottenham have not yet been able to agree a deal for Pedro PorroGetty
It comes at a time when Emerson Royal, Matt Doherty and Djed Spence are all doing little to impress Lilywhites boss Antonio Conte.
But according to The Mail, Spurs have now hit a roadblock in their pursuit of a deal.
They saw a £32.5m offer rejected, before talks resumed this week over a new structure consisting of a fee plus bonuses.
It is the format of the payment which is leading Sporting to drag their feet.
And they may be set to call the move off altogether if negotiations continue to stall.
Porro was ready to sign a five-and-a-half-year contract with Tottenham following the Portuguese League Cup final on Saturday.
The wingback has played 96 times for Sporting, contributing 12 goals and 20 assists.
He impressed against Spurs earlier this season when Conte’s men faced Sporting in the Champions League group stage.
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Chelsea have also shown interest in him, with the Portuguese club targeting Brighton’s Tariq Lamptey as a replacement should Porro depart.
Porro was at Man City between 2019 and 2022 but never made a senior appearance for the club.
His arrival at the Tottenham Hotspur Stadium would likely see Spence head out on loan.