Liverpool manager Jurgen Klopp believes Harry Kane's rise to become one of the best strikers in the world presents Tottenham with a challenge in the next couple of years.
The 24-year-old England captain has scored 15 goals in 15 appearances for club and country this season to maintain his rich vein of form which has seen him score 81 goals in 102 Premier League matches in the previous three years, leading to links with the likes of Real Madrid.
Klopp, who experienced a similar problem in the summer when Barcelona tried to sign playmaker Philippe Coutinho, had a word of warning for Spurs.