"Following a seasonal viral infection, and given his background and by measure of precaution, Eric Abidal is spending 48 hours at the Princess Grace Monaco hospital," Monaco said in a statement.
Abidal, 34, was diagnosed with a cancerous liver tumour in 2011 and had a liver transplant the following year.
"Today's check-up allows (the hospital) to consider a release tomorrow," Monaco added, saying the defender would be taking part in Wednesday's training.
- Disease & Medical Conditions
- Eric Abidal