The 28-year old is one of four Belgians at Spurs – with the likes of Laurent Depoitre and Thorgan Hazard rumoured targets who could potentially increase that number – and he feels the homegrown core within the squad needs to be maintained.
"We need the English clubs to maintain their identity," said Vertonghen, in an interview with dhnet.be.
"We must find an ideal mix between English players and good foreigners. The fans want to identify with players who grew up in London and who have been trained by the club."
Spurs have a good track record of bringing through English talent and the current squad has a number of Three Lions internationals in its ranks.
Harry Kane, Ryan Mason and Andros Townsend are all regulars in the England squad, while Kyle Walker returned to the fray recently and Dele Alli earned his first senior call-up.
Eric Dier will be in line for his senior debut if he can keep up his early season form, while Danny Rose will be pushing for a call-up after returning to the Spurs first team.
Beyond those, promising youngsters like Josh Onomah, Harry Winks and Alex Pritchard have all been involved with the first-team and are just three of a number of talented academy players ready to make a breakthrough.
Vertonghen’s support for a strong English core seems to be a sentiment echoed by the Spurs hierarchy and with Mauricio Pochettino at the helm, they may just become the primary source of England internationals in the country.