Delays to the completion of the Populous-designed stadium for Tottenham Hotspur have seen the club switch Premier League fixtures in September and October to Wembley.
Spurs said in a statement that urgent meetings were being held with main contractor Mace and its supply chain after tests showed ‘issues with critical safety systems’.
The £800 million arena was due to host its first game on 15 September when Spurs play Liverpool, but this match, as well as one with Cardiff City on 6 October, have been moved to the national stadium.
A match against Manchester City on 28 October is showing as ‘venue TBC’ on the club’s website.
An NFL game scheduled for the new stadium on 14 October has also been moved to Wembley.
Spurs chairman Daniel Levy said: ‘We know this will be disappointing for all our season tickets holders, premium members and our fans worldwide.
‘We appreciate the support our partner the NFL has shown since the extent of this issue became evident today. At the start of the project we asked for your support during what we knew would be a complex and challenging build and now we ask for your continued patience and forbearance.’
A Mace spokesperson said: ’Unfortunately, our routine testing of the critical safety systems has flagged up issues that need to be addressed before planned test events can go ahead. It is extremely disappointing that – as advised by the club - a further two Premier League matches and the NFL game will now be played at Wembley, particularly for Tottenham Hotspur fans, but I am sure people will appreciate safety is our highest priority. The club and the construction team are working diligently to complete the iconic stadium as soon as possible.
’Although these delays are obviously frustrating, once complete the new stadium is going to leave a fantastic, lasting legacy and will be a project everyone involved will be proud to be associated with.’
Populous declined to comment.
The latest blow for the project comes after Spurs chairman Daniel Levy revealed last year that the cost of the stadium had ballooned.
Haringey Council last year gave the go-ahead for the football club to increase the capacity of the new stadium to 61,559 and reconfigure the original seating arrangements.