St Mirren Football Club can confirm that Jay Henderson has left the club to join Ross County on a permanent deal.
The club has agreed a fee with the Staggies as well as a potential sell-on for the St Mirren Youth Academy graduate who was out of contract.
Jay came through the Saints Academy and made his first-team debut in April 2021 in an away fixture against Hamilton Academical.
The 21-year-old would go on to make 38 appearances scoring two goals.
Manager Stephen Robinson said: "We made an offer to keep Jay as we wanted to him to stay but he expressed his desire to move on in search of regular first-team football and we can't guarantee that to anyone.
"We have protected the club and managed to get a good fee for Jay with a potential sell-on. We thank Jay for his service to St Mirren and wish him the best in his future career."