Talks between Tottenham and defender Toby Alderweireld over a new contract are at an impasse.

Discussions over an extension are underway for the 28-year-old centre-half but it is understood no agreement is in sight.

The lines of communication between both parties remains open and there remains a willingness from player and club to reach an agreement.

Tottenham defender Toby Alderweireld has two years remaining on his existing contact

However, as it stands, it remains unclear when discussions will recommence.

Alderweireld’s pending new deal will again raise questions over the club’s rigid pay structure.

The Belgium international has become a central figure for Mauricio Pochettino since his arrival from Atletico Madrid in 2014 - establishing a reputation as one of Europe’s top defenders.

But his current deal is worth in the region of £50,000-per-week; a relatively paltry figure for someone of his calibre.

Alderweireld’s advisors are seeking parity with Spurs’ top-earners Harry Kane and Hugo Lloris, who are both on £110,000-per-week.

But even a deal that size may not be enough to satisfy the former Atletico Madrid man, who knows he could earn much more elsewhere.

Boss Mauricio Pochettino is keen to keep the highly-rated defender at the club

Manchester City are long term admirers of Alderweireld and would be able to offer the 28-year-old significantly more.

The centre-half has two years remaining on his existing contact, with an option for a further 12 months.

The length of Alderweireld’s existing deal means there is no immediate rush from Tottenham to secure the defender’s future.

Nevertheless, the club will want to reach an agreement sooner rather than later to end any uncertainty over their defender’s future.

Meanwhile, Spurs are closing in Davinson Sanchez, despite a late hitch over the structure of the deal.

Tottenham are willing to pay around £28million up front and potential £14m in extras to secure what would be their first signing of the summer.

With the clubs in agreement over the fee, all that is left is to find some middle ground on how quickly the fee will be paid by Spurs. The dispute, however, is not expected to scupper the deal.