Tottenham manager Mauricio Pochettino says he would be "stupid" to stay at the club if they expect similar levels of success without changing the way they are run.
The Champions League finalists have not signed a player since 31 January 2018.
Pochettino plans talks with chairman Daniel Levy this summer after five years in charge.
"I am not open to start a new chapter with no plan, with no clear idea, with not being transparent," he said.
Pochettino, who has four years left on his contract, hinted before Wednesday's stunning Champions League semi-final second-leg victory over Ajax that he could quit and go home to Argentina if they won the competition.