Lucas Moura, whose hat-trick against Ajax on Wednesday saw Spurs book their place in next month’s Champions League final, was the last player signed by the club in a £25million move from Paris Saint-Germain in January 2018.
Pochettino is on course to guide Tottenham to a fourth successive top-four finish and could end the season lifting Europe’s biggest prize.
But the Argentine has warned Spurs cannot compete with the likes of Liverpool, Manchester City and Manchester United unless he is given ‘different tools to work’ with.
“I am not open to start a new chapter with no plan, with no clear idea, with not being transparent, telling you and telling our fans what’s next, what is our objective,” the Tottenham boss said.
“I know very well how this business works. And we know very well that we need to operate in a different way – that doesn’t mean to spend more or less money.
LIVE ON talkSPORT
talkSPORT is your home of live football! Here's what's coming up on talkSPORT and talkSPORT 2…
- Aston Villa vs West Brom (Saturday, 12:30pm) – talkSPORT
- Derby vs Leeds United (Saturday, 5:15pm) – talkSPORT
- Sunderland vs Portsmouth (Saturday, 7:30pm) – talkSPORT 2
- Doncaster vs Charlton (Sunday, 12:15pm) – talkSPORT 2
- Tottenham vs Everton (Sunday, 3pm) – talkSPORT 2
- Mansfield vs Newport (Sunday, 6pm) – talkSPORT 2
“But if we expect every season to be in the final of the Champions League because it is our plan, we need to create a plan. And the plan maybe is different to what has happened in the last five years.
“And if we believe that if we operate in the same way that we have operated in the last five years we are going to be every season in the final of the Champions League, and we are going to be every season in the top four and competing against projects like Liverpool or Manchester City or Manchester United, I think we are very naive.
“If you want to expect the same from Liverpool, from Manchester City or Manchester United and Chelsea, and you put the same expectation on Tottenham, and the people expect the same, of course, give me different tools to work.
“If not, I see the people working in the same way, in the future I’m going to be this guy. I am the most stupid person to work.”
With four years left on his contract and chairman Daniel Levy unlikely to welcome any approaches from other clubs, Pochettino would have to quit if he wanted out.
Asked directly if he would take a sabbatical, he replied: “I am open like I said before. I am open to everything.
“Of course I love to work, I love Tottenham, I love to be here every day, I enjoy it a lot, I am so grateful but after five years, I think our effort was massive.
“Of course my motivation is to be here and to work hard, to try to achieve all that the club want to achieve.