Darren Anderton believes Son Heung-min will 'start to question his future' at Spurs if Harry Kane leaves this summer, with 'all the top European clubs' closely monitoring events at the North London club.
Tottenham are in the midst of a tricky summer, with Daniel Levy's search for Jose Mourinho's replacement taking longer than anticipated, while Kane is understood to have made clear his intention to end his 17-year stay at the club.
Kane has formed a strong partnership with South Korean team-mate Son, with the pair combining for 34 goals this season, but the England captain's pursuit of silverware risks breaking up the duo.