Having progressed through the club's youth academy, Molyneux made his debut for the reserve team at the age of 16 and developed a reputation as a set piece specialist.
He joined Southampton in 2009, where he made his first-team debut and spent time on loan with Port Vale before being released from his contract in the summer of 2010.
After a spell in prison for assault, he returned to the English Football League in August 2012 when he signed with Accrington Stanley.
He dropped into non-League football with Guiseley in August 2017 and spent the second half of the 2017–18 season on loan at Chorley, where he won the Lancashire FA Challenge Trophy.
Molyneux was born in Huyton, Merseyside,[4] and was in the youth team at Wrexham between the ages seven and nine, before he joined the Everton academy.
[14] However, he never made an appearance for Vale, except in the Staffordshire Senior Cup final – a tournament for the club's reserve players – and returned to the south coast in the summer.
[20] In August 2012, Molyneux returned to professional football when he joined League Two side Accrington Stanley on non-contract terms following a successful trial.
[21] He scored his first senior goal with a 20 yards (18 m) free kick in the FA Cup on 1 December, in a 3–3 draw with Oxford United at the Crown Ground.
[23] He ended the 2012–13 campaign with nine goals in 43 games, and after being converted into a winger following the arrival of Laurence Wilson was described by The Times as being "League Two's Gareth Bale".
[27] He lost his first-team place in October, and the next month he joined Keith Hill's League Two club Rochdale on loan.
[41] On 8 February 2018, having gone two months without a game for the "Lions", he joined National League North side Chorley on loan until the end of the 2017–18 season.
[43] Matt Jansen's "Magpies" went on to qualify for the play-offs with a sixth-place finish in the National League North, but were eliminated by Harrogate Town at the semi-final stage in a game where Molyneux was sent off on the cusp of half-time for a high challenge on Ryan Fallowfield.
[51] In January 2011, Molyneux was sentenced to three years imprisonment for a violent assault committed while binge drinking; he served 17 months.