The reason for Rodrigo Bentancur's sudden on-field collapse on Wednesday evening has been confirmed.
The Uruguayan midfielder was substituted in the first half of Tottenham's Carabao Cup semi-final first leg clash with Liverpool after a lengthy delay in which the player received treatment on the pitch.
Bentancur fell to the floor with no-one around him in the first-half causing huge concern for his health.
The Uruguayan was subsequently taken to hospital for thorough medical examinations before returning home on Wednesday night.
However an update has been issued from Spurs boss Ange Postecoglou, in which the Australian manager revealed that Bentancur had suffered 'a concussion'.
WARNING: Distressing images below
'Good news, thankfully. He was in the hospital and they did all the tests, just checking everything's okay, and all good, he's back home and he's fine, he's feeling good.'
'We'll follow protocols now and it's a couple of weeks where you just have to make sure everything's okay, but thankfully it looks like a concussion but nothing more.
'It's always distressing. You saw especially for Pedro (Porro) who was the first one there and kind of knew that it was a distressing situation but I thought the lads handled it well and the medical team handled it well, and thankfully all good.'
The 27-year-old had needed treatment on the pitch for nine minutes after his collapse, before he was stretchered off to applause from both sets of supporters.
However the player himself was quick to assuage any concerns over his health on social media shortly after the game.
He took to social media to share an update on his condition with his fiancee, posting: 'All good, guys! Thank you for the messages!!! Congratulations for the victory boys!!!'
He could now face another spell on the sidelines, having already missed eight matches through suspension this season.
Bentancur was hit with a seven-game ban for making an alleged racial slur against Tottenham captain Son Heung-min during a TV interview in Uruguay.
He then sat out Spurs' 2-1 defeat by Newcastle on Saturday after picking up his fifth booking of the season the previous week.
With their team-mate undergoing medical checks, Spurs went on to win the first leg in north London 1-0, Lucas Bergvall striking in the 96th minute to stun the Reds, handing them just a second defeat of the season in all competitions.
Tottenham return to action on Sunday when they face National League outfit Tamworth in the FA Cup.
They then travel across north London to take on Arsenal in a mouthwatering Premier League clash next Wednesday.