The club have reached an agreement with the 31-year-old free agent, who will join up with the rest of the squad on Thursday morning.
He made 396 appearances in his first spell with the club, scoring 41 goals.
Sparrow returns home
The club have reached an agreement with the 31-year-old free agent, who will join up with the rest of the squad on Thursday morning.
He made 396 appearances in his first spell with the club, scoring 41 goals.