Former Arsenal goalkeeper Manuel Almunia is expected to announce his retirement from football after a heart condition was detected at a routine medical.
The Spaniard was close to joining Serie A side Cagliari earlier this month as a free agent having played the past two years at Watford.
However, Cagliari abandoned the signing of the 37-year-old after medical examinations revealed a heart problem.
"I can confirm that Manuel Almunia failed a medical due to a heart condition," Cagliari spokesman Alessandro Steri told Press Association Sport.
"Further tests done have revealed he is suffering from an apical hypertrophic cardiomyopathy (HCM)."
HCM is a genetic heart disorder that can cause sudden death.
Almunia began his playing career at home club Osasuna in 1999. He joined Arsenal in 2004 from Celta Vigo, leaving in 2012.