Tottenham chairman Daniel Levy has suggested the club could continue playing at White Hart Lane next season.
Spurs have until Friday to activate their option to play at Wembley after their application to host 27 matches at the stadium's full 90,000 capacity was approved.
Yet Levy has revealed the club are seeking "greater certainty" that their new 61,000-seater stadium will be ready in time for the 2018-19 campaign.
Tottenham could therefore stay at their current ground next season and play home games at Wembley the following year, before moving into the new stadium for the 2019-20 campaign.
In a statement alongside Tottenham's latest financial results on the club website, Levy said: " We continue to focus on ensuring that the future of the club is protected at all times.
"Therefore, whilst everyone is eager to know if this is our last season at the Lane, we shall only make the decision to decommission our historic White Hart Lane when we have greater certainty on the delivery of the new stadium.
"Our performances on the pitch and the sight of our new stadium taking shape signifies an exciting future. As we move forward with the challenges ahead, I firmly believe that the positive outlook, unity and togetherness across the club, the team and the fans means we can look forward with optimism."
Spurs revealed record revenue of £209.8million for the year ending June 30, 2016, and profit after interest and tax of £33million, up from £9.4million the previous year.