Clements began his career with Crewe Alexandra as a member of the club's renowned academy. His career debut came in a loan spell at Nantwich Town in 2008. Following this loan, Clements was sent out on loan to Leigh Genesis during the 2008–09 season, and also to Stafford Rangers, before signing his first professional contract with Crewe. Having signed his first contract, in 2009 Clements was loaned out once more, this time alongside A-Jay Leitch-Smith, to Icelandic club ÍBV, before returning to England early due to an injury crisis at his parent club. Clements made his debut for Crewe on 7 November 2009, in a 3–2 FA Cup first round defeat away at Conference National side York City; starting on the substitutes' bench, he replaced James Bailey in the 90th minute. This proved to be Clements' only appearance for Crewe; at the end of the 2009–10 season, when his contract expired, he was released by the club.
In the summer of 2010, Clements joined Hednesford Town; he had a two-season stint at the club. He picked up the young player of the year award at the end of the 2011–12 season at the Northern Premier League's annual event.
Clements played as a trialist for Burnley's reserve side in a 3–1 win over Tranmere Rovers on 30 April 2012. In spite of the trial being unsuccessful, Clements was signed by Mansfield Town at the beginning of June 2012. After helping the Stags to the 2012–13 Conference National title, Clements was awarded a new contract at the club for 2013–14.
On 18 January 2017, Clements signed an 18-month contract with newly promoted League Two side Grimsby Town. He scored the opening goal on his debut for the club on 4 February 2017, a 56th-minute header, in a 1–1 draw against Luton Town. Clements didn't feature in a first team game for Grimsby during the 2017–18 campaign, mainly due to personal reasons and the need to gain match fitness. He joined National League side Barrow on 29 September 2017 on a three-month loan deal. He debuted one day later in their 1–0 home defeat against Maidstone, and made seven appearances for Barrow before the loan expired on 25 November 2017. Clements joined newly promoted League Two side Forest Green Rovers on 31 January 2018, transfer deadline day, until the end of season. He debuted three days later, coming on in the 63rd minute as a substitute, in their 2–1 home victory against Coventry City. On 24 May 2018 Clements was released by Grimsby.
Cheltenham Town
In August 2018, Clements joined Cheltenham Town on a short-term deal. In May 2019 he signed a new one-year contract to remain at Cheltenham for the 2019-20 season.
