Wide man ends season long U's stay.
After a season at the Weston Homes Community Stadium, the full back was told this week that he wouldn't be getting a new contract.
His time in 2012/13 was split between playing for the U's U21s side and on loan at Cambridge City.
U21s boss Richard Hall spoke to the official website following the news, saying: "It's never easy to release players but we have to be fair to the player and the club.
"I couldn't fault Jackson's attitude and work rate but we felt he was a little bit away from what we needed.
"Hopefully, he will get himself fixed up somewhere and we wish him all the best in his future career."
Keep up to date with all the U's transfer dealings over the summer on the official website, www.cu-fc.com.