Mauricio Pochettino is basking in the glory of defying modern football logic and leading Tottenham Hotspur to their first Champions League final but warns a crash could follow unless the club comes up with a new plan.
The 47-year-old has even strongly hinted next month's final against Liverpool in Madrid could end his impressive five-season stay at Spurs in which he has established the club in the Premier League's top four and himself as one of the world's top coaches.
Tottenham have not signed a single player in successive transfer windows while title rivals Manchester City and Liverpool and Chelsea, Arsenal and Manchester United have all invested huge sums in strengthening their squads.
The strain has told in recent weeks with Tottenham's Premier League form collapsing, although barring an unlikely sequence of events in Sunday's climax, they will finish at least fourth for the fourth successive season.
Pochettino, one year in to a five-year contract, spoke of his pride at keeping Tottenham moving forward.
But the distinct impression after Wednesday's magnificent 3-2 win away to Ajax Amsterdam sent Spurs fans into delirium, was that he is becoming weary of Tottenham's self-imposed underdog tag.
"I am open to everything," he said, after being asked if he was considering leaving. "What I'm not open to is to start a new chapter with no plan or a clear idea.
"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 Champions League final, the top four and competing against projects like Liverpool or Manchester City or Manchester United, I think we are very naive."
When Pochettino joined the club from Southampton his brief was to close the gap on the top four and hopefully deliver Champions League football into the new stadium.
Despite winning no silverware he has over-achieved in that respect and on Friday he joked if someone had told him in 2014 that Spurs would reach the Champions League final in five years he would have asked what they were drinking.
The question now, he says, is what's next?
Pochettino said in an interview in Spanish daily El Pais this week he turned down a job offer from Real Madrid last summer when he agreed a new deal with Tottenham.
While the first five-year plan at Spurs could yet end in glory, Pochettino wants to know how ambitious the club is.
"In the five years we have achieved a lot of things, but now it's what's next?
"If you are not focused, if you don't start to work and make a plan, don't anticipate things, when you crash you crash."
Fans are hoping when Pochettino sits down with club chairman Daniel Levy after the Champions League final he hears what he wants to hear.
Australian Associated Press