Tottenham are hopeful Christian Eriksen will be the next player to sign a long-term contract after Dele Alli committed his future to the club on Tuesday.

Spurs have been in talks since last season about extending Eriksen’s £70,000-a-week deal, which expires in 2020, but they are yet to make a breakthrough in negotiations with the Dane’s representatives.

Even so, the club are optimistic of reaching an agreement with the midfield playmaker, with any deal expected to at least double his salary after Alli signed a contract worth £150,000 a week, making him the club’s second highest earner behind Harry Kane.

There has been interest from Spanish giants Real Madrid and Barcelona in 26-year-old Eriksen, who has established himself as one of the finest midfielders in the country since moving to north London from Ajax in 2013.

Centre-half Jan Vertonghen is also out of contract in the summer of 2020 after the club exercised an option to extend his deal by a further year, although his Belgium team-mate Mousa Dembele is free to talk to overseas clubs in January after rejecting the chance to extend his contract, which expires in the summer.

Toby Alderweireld’s £50,000-a-week contract — agreed when he joined from Atletico Madrid in 2015 — is also due to expire then. Spurs have the option of extending his deal by a year, activating a release clause allowing him to leave for £25million in the final two weeks of next summer's transfer window.

Eriksen is expected to start Wednesday's League Cup fourth-round tie at West Ham, despite struggling with an abdominal injury for the past month.

Spurs manager Mauricio Pochettino said: “He is fully fit. Another thing is to play well or not, but he is fully fit and maybe he could start. I asked him to play 90 minutes against PSV Eindhoven, so it was difficult to overload him [against Manchester City on Monday], but I hope he will ready to play. Dele Alli, too, is possible.”

Uefa will test the Wembley pitch the day before Tottenham’s Champions League home match against PSV next Tuesday. Uefa are said to be relaxed about the state of the pitch, in a dreadful condition for Monday night’s match, which was 24 hours after an NFL game at the national stadium.

PSV are aware of the condition of the pitch, but it is expected to improve in the next few days and a spokesperson for the governing body said: “Uefa is closely monitoring the situation.”