Following his loan spell at Oakwell in Spring 2009, Barnsley launched a bid which was turned down as Liverpool wanted to see what Hammill could offer during pre-season. However, Hammill remained out of the Liverpool first team after yet being given a squad number despite playing in a friendly match, which he scored. Barnsley then made a second bid, which Liverpool, this time, accepted and Hammill signed a three-year contract on 10 August 2009. Though he has no regrets leaving Liverpool for Barnsley, Hammill, however, said Liverpool will forever be in his blood.