Vertonghen was bought for the scandalously low £9.5 million from Ajax to replace retiring Tottenham legend Ledley King. The Belgian performed so well that the former captain's absence was rarely mentioned.
Spurs had a new manager in Andre Villas-Boas and a new spine following King's retirement, the departures of Luka Modric and Rafael van der Vaart and the signing of goalkeeper Hugo Lloris. Despite all the upheaval, Vertonghen was simply magnificent. A calm and reassuring presence in defence and a surprisingly important player in attack, he rapidly earned a reputation as one of the Premier League's finest defenders.
But Vertonghen's second season was a substantial disappointment. Amid managerial changes, tactical disagreements and injuries, Spurs' reliable defender became a liability. His attitude was readily questioned by the fans and his season came to a premature end following an injury in the north London derby.
As Spurs prepare for a new season under yet another new manager, should they persist with the unpredictable Belgian international? Do issues with form and a questionable attitude, as well as reported interest from Barcelona, per Neil Fissler of the Express, make this the right time for Spurs to turn a handy profit and sever ties with their centre-back?
Here are five reasons why Tottenham should not sell Jan Vertonghen.