AFC Wimbledon have made former Stevenage defender Dan Sweeney their first signing of the summer, with the centre-back signing a two-year deal.The 32-year-old made 112 appearances for Boro over the past three seasons, but was released last month.Sweeney was part of the AFC Wimbledon academy, and told the club's official website it was "brilliant to be back"."Where the club was from when I was here, to where it is now is quite astonishing," he added.After leaving Wimbledon in 2013, he played for K