Scrum-Half says decision is "best for all concerned"
Scotland international scrum-half Sam Hidalgo-Clyne will be leaving the Lllanelli side.
In a statement, the club say the decision is by mutual consent.
The 25-year-old signed from Edinburgh last summer and made 18 appearances in a Scarlets jersey.
He joined Gallagher Premiership side Harlequins for a loan spell in March, featuring strongly in their Challenge Cup campaign.
Scarlets General Manager of Rugby, Jon Daniels said:
“We wish Sam well for the future and thank him for his commitment to the Scarlets cause. I am sure he will be an asset to whichever club he joins for the next chapter of his career.”
Sam Hidalgo-Clyne said:
"I have enjoyed my time at the Scarlets. The boys are great and the fans are very passionate, but it's best for all concerned that I continue my rugby career elsewhere."