Purrington has been earning rave reviews at Home Park after breaking into the Argyle first team at the end of December.
The highly-rated left-back has made 11 appearances for the Pilgrims after making his debut in the Boxing Day win away to Oxford United.
The 17-year-old has been nominated for the League Two Apprentice of the Year award and has also been tipped to win a call-up to the England Under-18 squad.
Purrington's progress has not gone unnoticed higher up the football pyramid with the likes of Liverpool, Aston Villa, Southampton, Reading, Brighton, Huddersfield and Bournemouth all keeping tabs on the player.
Purrington, who has 18 months to run on his current contract at Plymouth, is thought to be happy to be playing regular first-team football at Home Park but as yet the club have not opened talks about rewarding the youngster's progress with a new deal.