The midfielder was on loan for the final part of Town’s title-winning campaign last year and has rejoined the club on a temporary deal until January.
A graduate of the Crystal Palace Academy, Bostock made his professional debut for the Eagles in October 2007 before signing for Spurs in 2008.
In November 2008, Bostock became the youngest ever player to make an appearance in a competitive match when he came on as a second half substitute during a UEFA Cup group match with Dinamo Zagreb at White Hart Lane.
He continued made further first team appearances in the UEFA Cup before making 11 appearances on loan for Brentford in 2009-10.
Click here to watch an exclusive video interview with Bostock on STFC Player