LONDON — The new stadium being built for English Premier League club Tottenham isn’t ready to host the NFL this year. The first NFL game at Tottenham was due to feature the Seattle Seahawks and Oakland Raiders on Oct. 14. That will now be played across north London at Wembley Stadium on the same day. Tottenham said “issues with the critical safety systems” had been exposed during tests. “We appreciate the support our partner the NFL has shown since the extent of this issue became evident today,” Tottenham chairman Daniel Levy said Monday. Wembley will also stage the Oct.