Tottenham Hotspur FC have announced another delay to the opening of its new stadium.

In an online statement to supporters, Spurs said that they still don’t have a set date for the completion of the £850m stadium and apologised to fans.

Spurs also revealed its Premier League home game against Manchester United on 13 January would be held at Wembley, with no further commitments on what events would be held at which venues.

The club said it would be looking to speed up construction by having the project’s contractors work “day and night” over Christmas.

Spurs announced last month that they had reached a deal to use Wembley Stadium for the foreseeable future while they “await certainty” on a finish date.

The club said they will receive a status report in the week commencing 7 January and will provide an update on the project schedule following that.

To gain the necessary safety certificate, the stadium must hold test events involving fans. These had been due to take place on 27 August and 1 September.

However, the football club said issues with critical safety systems were behind the delays, stating that they needed to be rectified before the test events could take place.

Spurs chairman Daniel Levy said: “What I don’t want to do is set any firm dates until we have finally achieved a safety certificate.

“We are acutely conscious that we are asking fans to go to Wembley for far longer than any of us wanted to. However, we are now seeing the progress that we needed to see.”

Inside sources on the scheme have previously told CN they would not be surprised if the club “wrote off the season” in anticipation of a summer 2019 completion date, and instead played all the remaining games of the season in other venues.

In September, CN exclusively revealed allegations of chaos and ill-discipline on site, with sources working on the project claiming that delays were being caused by poor communication between subcontractors.

Working conditions on the project have previously come under scrutiny after CN revealed some workers were being incentivised to work back-to-back 12-hour shifts.