23 year old Clark, who has made over 100 first team appearances for Spiders came through the clubs youth system and made the breakthrough at the tail end of the 2002/03 season under Dave Hunter and Paul Martin before becoming a regular under Kenny Brannigan.
Alloa, secured their Second Division status on Sunday beating Berwick Rangers 5-2 on aggregate in the playoff final to remain in Scottish footballs third tier, probably the catalyst for Ross' move to Clackmannshire.
We wish Ross all the best in his career.