Radek's loan arrangement from Slavia Prague has been extended until 2008 and his coach is delighted to have the chance to work with him for another couple of years.
The 32-year-old played three times last season and starred in the Peace Cup win in South Korea in July as Paul Robinson recovered from injury.
This season heÃ¢â‚¬â„¢s been sat on the bench as ever-present Robbo furthers his reputation as EnglandÃ¢â‚¬â„¢s number one.
"IÃ¢â‚¬â„¢m so happy RadekÃ¢â‚¬â„¢s signed," said Hans. "In all the years I've been in the game I couldnÃ¢â‚¬â„¢t have asked for a better deputy.
"He enjoys it here. If you went around the country you could be pretty sure that the goalkeepers are all a bit fed up sitting on the bench.
"HeÃ¢â‚¬â„¢s a great goalkeeper, he does his job well day in, day out, he works hard and as a club we are so pleased to have him.
"Radek is pleased to have come to England and to have been involved in a club like Tottenham, his family has settled well so overall heÃ¢â‚¬â„¢s very happy."
Hans stressed that the added value is RadekÃ¢â‚¬â„¢s experience with the likes of David Button, Tommy Forecast, Rob Burch and Marton Fulop at the club - although Marton is currently on loan at Coventry City.
"For the club to have Radek as back up is crucial because we have a lot of young goalkeepers that havenÃ¢â‚¬â„¢t tasted league football, obviously apart from Marton at Coventry at the moment, added Hans.
"To have him on board is vital and Robbo will only get better and better as well."
Hans Segers has described Radek Cerny as the 'perfect deputy' after the Czech goalkeeper extended his stay at the Club this week.