London - Tottenham chairman Daniel Levy insists his club will still leave their current home at White Hart Lane even if they are unable to take over London's Olympic Stadium.
Levy is leading Tottenham's attempt to persuade the Olympic Park Legacy Company (OPLC) to back their proposed 250 million pounds (394 million dollars) move to the Stratford site of the main stadium for the 2012 London Games.
However, Tottenham's east London-based Premier League rivals West Ham, are also keen to win the right to use the stadium.
It had been thought Spurs would rebuild their current ground in north London if they were unable to secure the right to redevelop the Olympic site.
But Levy has now branded the so-called Northumberland Development Project currently "not viable", with costs having spiralled due to demands being placed on Spurs by Haringey Council, Transport for London and English Heritage.
Asked if the club's next home might be outside Tottenham even if the Stratford strategy did not succeed, Levy told Sky Sports News: "Correct. The problem with the situation we're in now at White Hart Lane is that the project currently is not viable.
"So we would have to go back to the drawing board, and that would obviously mean looking at other locations again.
"It's one of those emotive items that, if one had a choice, we would rather be building here, we would rather have fantastic transportation links.
"But what is clear for this club is that, in order to compete at the highest level within the Premier League and European football, we need to solve the stadium (issue).
"We need a larger stadium, and if that means we have to move out of the area, I think the fans will back us."
The OPLC announced on Monday they were delaying a decision on their preferred bidder for the Olympic Stadium, which had been expected this Friday.
Some Spurs supporters have staged protests against the move to Stratford, including before the club's last home game against Manchester United.
Levy added: "As far as the fans are concerned, I have to say that it's a very, very small group of individuals who would make it clear that, whatever happens - even if we couldn't build a bigger stadium - they would want us to stay here.
"How do we get the next generation of fans to come to a game if they can't get a seat? It's a real dilemma for us."