The MK Dons academy graduate was tipped for big things at Stadium MK
The 32-year-old played in just 11 games for Salop this season, but in his 2.5 years with the Shropshire team, he collected 67 appearances.
However, once the team was promoted to the Championship in 2015, Flanagan left MK1 for fresh pastures after having brief loan stints at Stevenage and Plymouth Argyle as well. Only 44 more appearances for the team would Flanagan make in the five years after his debut.