Jan Vertonghen Warns Tottenham Teammates Ahead of Champions League Clash Against 'Fearless' Ajax

​Tottenham Hotspur defender Jan Vertonghen has claimed that his former club Ajax train players to be mentally tough from from the young age of six, ahead of the Champions League semi-final clash between the two clubs. Ajax was Vertonghen's first professional club, he made 220 appearances for the Dutch side from 2006 until he eventually joined Tottenham in 2012. The Eredivisie side have surpassed all expectations this year by reaching the tournament's semi-finals, knocking out the reigning... Via All the latest breaking football news, transfer rumours, analysis, and match reports - 90min http://www.90min.com/