Career
On 27 May 2010, he signed a permanent contract with Bradford City after being released by Premier League club Liverpool. Liverpool Born in Liverpool, Threlfall began his career moving through the Liverpool youth ranks, training at the club"s academy and eventually graduating to Melwood in the 2006-2007 season. He made his first senior appearance for the club against Wrexham in a pre-season friendly.
Subsequently, he became a regular in the Liverpool Reserves, also making his England Under-19 debut against Poland in Bournemouth on 6 February 2007.
He scored in the second-leg to level the score and finished a crucial penalty kick helping the Merseyside club retain the title. Lower division loans Threlfall re-signed for the Bulls on loan for six months, at the start of the 2008-2009 season.
He started the first three league games of the season, as well as a League Cup match, before breaking his foot in early September. He later joined Stockport County on loan for a month on 6 February 2009, consequently making two league appearances.
In October 2009, he was set to make another loan move this time to Darlington but had a change of heart the following day.
His second career goal came against Portuguese Vale three games later. On 22 March, it was announced that his loan deal had been extended until the end of the season. On 26 May, Liverpool announced they would be releasing Threlfall, along with goalkeeper Chris Oldfield.
Morecambe He signed for League 2 side, Morecambe on a two-year contract, on 17 May 2012.
He scored his first goal for Morecambe against Rotherham United on 6 April 2013. Threlfall was released by the League 2 club on 6 May 2014.