"After feeling strange in the second half of the Burton game in September, I underwent a series of tests," he said.
When Netherlands striker Robin van Persie put away a spectacular diving header against world champions Spain on a balmy afternoon at last year's World Cup it set them on the way to a 5-1 win and the promise of glory.
Images from the UEFA Champions League matches played on Tuesday.
>The World Cup captain was a remarkable species: Always trying, pushing, lifting, harassing, delivering; the kind who would unhesitatingly jump into the deep end to save the day. They're all gone now, says Dhruv Munjal.
News of all that's transpired on and off the football field.
News of all that transpired on and off the football field.
The Welsh, who reached the Euro 2016 semi-finals, finished runners-up on 14 points from eight games, three behind Croatia who sealed their berth on Saturday with a 3-1 win over Slovakia.
Luka Modric pulled one back for Zinedine Zidane's shellshocked side with a brilliant strike from distance early in the second half before substitute Vinicius Jr reduced the deficit to one goal.
A round-up of all football-related news...
Images from the UEFA Champions League quarter-final first leg matches played on Wednesday
As Leicester City celebrates its unexpected title triumph, Bikash Mohapatra/Rediff.com lists similar success stories across Europe's top leagues.
Real Madrid's star striker Cristiano Ronaldo made up for his otherwise quiet night by scoring the winner to beat Barcelona 2-1 win at the CampNou in Barcelona on Saturday.
News of all that's transpired on and off the football field
From the debate-arousing introduction of VAR to maximum number of Penalties to the superb Ronaldo, here are the A to Z of the ongoing 2018 World Cup
Dani Alves has blamed the media for Brazil's unsuccessful World Cup campaign but conceded that the team did not prepare properly ahead of the humiliating 7-1 defeat by Germany in the semi-final.