Since Mauricio Pochettino’s departure in 2019, Spurs have had five different managers.
Jose Mourinho took charge between 2019 and 2021, but was sacked just days before the Carabao Cup final against Manchester City.
Nuno Espirito Santo’s tenure lasted only four months, while Antonio Conte criticised the club’s board and called his players ‘selfish’ before he was sacked after 16 months in charge.
His successor Postecoglou was dismissed last summer, while Frank lasted less than a year of his three-year contract.
Postecoglou, who was sacked by Nottingham Forest after just 39 days in charge earlier this season, questioned whether Frank was aware how things would operate when he accepted the job.
“You know that he can’t be the only issue at the club,” said the 59-year-old.
“It’s a curious club, Tottenham.
“It made a major pivot at the end of last year, not just with me but with [executive chairman] Daniel [Levy] leaving as well, and created this environment of uncertainty.
“There’s no guarantee whichever manager you bring in. They’ve had world-class managers there and they haven’t had success. And for what reason?
“Thomas is walking in and what’s his objective? What’s the club’s objective?
“If you’re going to do such a major pivot, you’ve got to understand there’s going to be some instability there.
“Did Thomas know he was walking into that? I don’t know.”
