Johan Lange and Roberto De Zerbi have now explained why Tottenham Hotspur handed Antonin Kinsky a new long-term contract despite his mixed bag campaign last season.It was a rollercoaster end to last season for Antonin Kinsky, with the Tottenham Hotspur shot-stopper having to overcome some costly errors after being thrown into the deep end during the Champions League round of 16 tie against Atletico Madrid.Three mistakes in the space of 15 minutes led to him being substituted before the half-hour mark, making his European debut one of the worst imaginable.However, a resilient Kinsky refused to let his head drop and was soon handed another opportunity to prove himself after Guglielmo Vicario was sidelined following hernia surgery.The young Czech made the most of that opportunity and played a vital role in Spurs’ fight for Premier League survival, producing a string of stunning saves that helped keep the Lilywhites in the top flight.Credit: @thefrederikkejensen / InstagramJohan Lange opens up on why Tottenham handed Antonin Kinsky a new dealSpurs Web has previously reported that a new deal was in the works for Kinsky, and it has now finally been confirmed by the club.It is expected that the 23-year-old, who was earning £30,000 per week, will receive a significant pay rise to reflect his status as Spurs’ number one goalkeeper following his heroics last season.The new agreement comes after Martin Dubravka’s arrival and amid reports suggesting that Guglielmo Vicario could be sold during the summer transfer window.Following Kinsky’s improved contract, which will keep him at the club until 2031 with the option of a further year’s extension, Tottenham sporting director Johan Lange has now explained why the club were so determined to secure the goalkeeper’s long-term future. Speaking to the club’s official website, Lange highlighted the qualities that convinced Spurs to sign Kinsky in the first place and revealed why there is so much confidence in his continued development.He said: “From the moment we identified Toni as a target, we were convinced he had the qualities, character and mentality to become an important player for this Club.“We have been delighted with the way he has adapted over the past 18 months, both on and off the pitch, and this new contract reflects our confidence in his continued development.“Toni has an outstanding work ethic, a strong desire to improve and the attributes required to perform at the highest level.“Securing his long-term future is an important step for us and we are excited to see him fulfil the potential we believe he possesses.”Roberto De Zerbi explains why Kinsky deserved new dealRoberto De Zerbi, who is playing an active role in shaping Tottenham’s squad ahead of next season, also shared his thoughts on Kinsky’s new contract while speaking to the club’s official media channels.The Tottenham head coach reflected on the goalkeeper’s outstanding finish to last season and explained why he believes Kinsky has fully earned his improved terms. De Zerbi also outlined why he feels the Czech international has everything needed to develop into one of Europe’s top goalkeepers if he continues progressing at Spurs.He said: “Toni was outstanding over the final seven games of the season and a key part of what we achieved in that period.“I am delighted he has committed his future to the Club. He has earned this new contract, not only with his performances but also his professionalism and desire to improve.“We have huge belief in what Toni can become. He is still young, has enormous potential and I know that Spurs is the perfect place for him to continue to develop into one of the best goalkeepers in Europe.”READ MORE: ‘From what I hear’ -Aston Villa eye up shock move for senior Tottenham midfielder, and Spurs are openThe post Roberto De Zerbi tips one Tottenham star to ‘develop into one of the best in Europe’ appeared first on Spurs Web.