The 35-year-old finished the season on loan at Huddersfield from Burnley and has since been released by the Clarets to make him a free agent.

Terriers boss Andy Ritchie told his club's website: "Frank has versatility, lots of experience and fitness. He has kept himself in great condition."

Sinclair made over 100 appearances for Burnley following earlier lengthy spells with Chelsea and Leicester City.

Meanwhile Ritchie has decided to release all of his senior players who are out of contract.

Among them are Martin McIntosh, Mark Hudson, Adnan Ahmed and John McCombe.

Meanwhile young defender Aaron Hardy has been offered a new six month contract