The former Spurs boss laid into the Belgian after he produced yet another unconvincing display in the club’s 3-0 defeat to Chelsea.
Sherwood said: “Vertonghen is so poor. Can’t move his feet. He looks elegant with the ball but he just can’t defend, this guy.”
Vertonghen was frozen out of the first team under Sherwood, who left the White Hart Lane club at the end of last season.
His Spurs future remains unclear with no new deal on the horizon – despite claims from his agent that he was set to sign earlier this season – and interest from Manchester United.