New Tottenham boss Mauricio Pochettino must be given time to build a side capable of sustaining a top-four challenge, says Jamie Redknapp.
Pochettino, 42, has joined Spurs on a five-year deal after leaving Southampton, replacing Tim Sherwood after the north Londoners finished sixth in the Premier League.
The Argentine is Spurs' 10th manager in 13 years and former Tottenham and Southampton midfielder Redknapp told Sky Sports News that chairman Daniel Levy must now usher in a period of stability at White Hart Lane.
"Pochettino has obviously got good pedigree having been at Espanyol and I think everybody has been impressed with the job he's done at Southampton, where he brought a lot of youngsters through and I think that fits the bill of what Daniel Levy is trying to do at Tottenham.
"He did well at Espanyol and Southampton are a very good football club but Spurs is a very different kettle of fish altogether. Tottenham is a very big club - the expectations are very high; they are looking to get into the top four and I think they need some positivity now.
"They've been through a lot of managers over the last 10-15 years since Daniel Levy came in as chairman. I think they need to give somebody an opportunity to build a team now. Too many players have gone in and out of the club; every time they get a good player they sell them on, which I think is slightly unfair to the fans.
"This year they spent £100m to replace Gareth Bale and it hasn't worked at all so the recruitment policy has to change to a certain extent because apart from Christian Eriksen the players they brought in in the summer haven't done well enough this year."
In a statement announcing the appointment, Levy praised Pochettino's "proven ability to develop each player as an individual".
But Redknapp said the former Argentina defender would only be able to live up to the billing if he is given a decent run at the club - even if he doesn't secure Champions League football this coming season.
"A long-term contract doesn't mean anything at Tottenham, that's for sure," reflected Redknapp.
"If they don't finish in the top four this year there is going to be an awful lot of pressure on him. That's been the way that they've run the club in the last few years; I don't believe it's the right way to go about it.
"But if they give him five years, he's a young manager who did a good job at Southampton bringing young players through. I must admit that he was given a good base by Nigel Adkins - Southampton have a really good youth system there - and they'll be hoping they can do that at Tottenham.
"That's the key now - to try and bring some good young players through and give them opportunities. He'll need a bit of time and a bit of support and it will be interesting to see which players they bring in, in the summer. Will he be able to bring the best out of Erik Lamela? Being Argentinean will help; they spent an awful amount of money on him and it hasn't really worked out."
He added: "You can't expect Pochettino to come in and change things straight away - it doesn't always work like that.
"Tottenham must look across the road in north London and think about the time that Arsene Wenger has been given and maybe they could try that approach with Pochettino?
"These are interesting times at Tottenham. They have to have a change of philosophy to a certain extent and bring in the players that are going to take the football club onwards and upwards because the last three or four years haven't worked."
Is Mauricio Pochettino the right man for Tottenham?