The North London club narrowly escaped relegation over the weekend, after appointing Roberto de Zerbi late in the season, and Vinai Venkatesham, the Spurs chief executive, has now opened up about their struggles, explaining how he's trying to change the club's fortunes.
Speaking to BBC Sport, he said: "This will require investment - in our teams, the academy, our backroom functions and more - and we are fully committed to this.
"We are not selling the club. We are all in. We are investing in it. You will see more of this in the coming months.
"We care deeply about Spurs. The rebuild the club needs, and you deserve, has begun. The change required is deep. It will take time and commitment, but change is happening."
Venkatesham joined the club last year, and was shocked by what he saw when he first walked through the door.
He said: "If you'd have asked me a few months after I joined, when I was no longer an outsider, I would have told you the club was in a significantly worse state in some places than I thought.
"That is absolutely not meant to be a criticism of anyone or anything. It was just what I found. It was very clear that this wasn't some form of turnaround that was required of the club in quite a few areas. It was really a complete reset."
Venkatesham suggested the club took their eyes off the ball while they've focused on stadium construction and other projects.
He said: "I would say on the non-football side of the club, in particular around stadium operations and commercial, that the club was and is really strong.
"I think if you look at the football side of the club, over a timeframe of five years or so, there has just been an explosion in progress across the Premier League.
"I'm not saying that Tottenham didn't improve in that period. But what I can tell you is that when you look at where Tottenham were in many of those areas, compared to where I believe other Premier League clubs are, there was a significant gap. In some areas really quite worryingly so.
"I don't think that there was what I would call a relentless obsession with football success."
