Hamilton Academical defender Ross McCabe has been forced to retire from football after suffering respiratory failure during a game in September.
Ross McCabe had hoped for a return to Accies' first-team
The 18-year-old was left unconscious following a collision with Clyde striker Dougie Imrie.
He has since undergone comprehensive medical examinations.
And Accies announced: "Ross has been advised that future participation in contact physical sports carries an unacceptable risk to his health."
McCabe had to be resuscitated before going to hospital during the First Division game against Clyde, which was abandoned following the incident.
"The whole episode has been a tragedy for Ross and the club, on his behalf, would like to thank everyone for their support to date," said Accies' statement.
"The priority is for Ross to embark on a new career with our help and to continue his recovery to full health."