Spurs enjoyed the glamour of hosting the likes of Real Madrid, Inter Milan and AC Milan in the Champions League last season, but their poor league form towards the end of the domestic campaign meant they could only qualify for the Europa League.
Redknapp has been scouring the globe for potential recruits and has highlighted an experienced leader and a free-scoring striker as his two priorities. "I want Daniel to go out and get three fantastic players now to come in," Redknapp told Sky Sports News.
Veteran goalkeeper Brad Friedel has been the only arrival at White Hart Lane so far this summer, but the club have been linked with moves for Brazil striker Leandro Damiao, West Ham's Scott Parker and Fulham frontman Moussa Dembele.
Redknapp added: "You can't say that just because we didn't make the Champions League, we're not going to improve next year. If you do that then we're not going to get in it again. That's a fact, because you won't pass the teams that finished above you last year.
"If we don't improve then they will improve. Manchester United, Chelsea, Arsenal - they will improve, and Man City... they're unbelievable. They are never going to stop improving as will Kenny (Dalglish) with Liverpool now.
"You have to keep improving if you want to keep anywhere near those teams. I certainly feel we need three players of real quality if we are going to compete with those teams otherwise it will be very difficult."
At their peak last November, Redknapp was confident that Tottenham could challenge for the Barclays Premier League title, but a poor run of form towards the end of the season almost cost them the chance to play in Europe completely.
Although he fears that his rivals will all embark on spending sprees this summer, Redknapp insists that his team can make the top four next year and even challenge for the title.
"I don't see why it's not impossible to get into the Champions League again," the 64-year-old said. "I've said I want to win the championship with Tottenham. I want to win the Premier League."
Source: PA
Source: PA