Kane has netted over 20 goals during the last two Premier League seasons, and he looks set to play a crucial role for England at EURO 2016.
Souness believes that Kane’s reputation is now so vast, that Spurs are likely to have to fend off offers from some of Europe’s biggest clubs in the next transfer window.
“The big danger with someone like him who is scoring this amount of goals is the really big guys out there; the two in Spain, maybe Bayern Munich and certainly Manchester United will love him in their team next year,” the Sky Sports pundit said.
“The big danger for Tottenham is whether they can hold on to him.”
Tottenham are understandably keen to keep hold of Kane, and they will be able to offer their prized asset Champions League football next season - which should help their cause.
The 22-year-old front man has been a major reasons behind Spurs’ brilliant season, which has seen them push Leicester City for the Premier League title.
Although it seems likely that Spurs will be unable to catch the Foxes, the future still looks very bright at White Hart Lane - with Kane one of a number of youngsters breaking through at the moment.
Kane has netted 24 Premier League goals in 35 appearances this season, beating his total of 21 from last campaign.