The player is part of the wider training squad at the province, and is currently being assisted as Munster await Health Service Executive (HSE) guidance.
The player has not been in Munster’s High Performance Centre this week.
“In taking all precautionary measures, Munster Rugby have immediately identified three Academy players and one senior player as potential close contacts and they have already commenced self-isolating,” a statement read.
“The latest phase of the IRFU’s routine PCR testing produced zero positive results ahead of this weekend’s ‘A’ game against Connacht.”
Munster's season ended with a Guinness Pro14 semi-final defeat to Leinster at the Aviva Stadium on September 4th.
Their new campaign is scheduled to begin with an away clash against Scarlets on October 3rd.