Tottenham Hotspur's right sided midfielder Dean Marney joined Norwich on a season long loan on 1st August 2005, after a couple of weeks of speculation with Nigel Worthington expressing his interest in the Tottenham youngster.

Marney signed professional forms with Spurs in 2002 but made his professional debut whilst on a six month loan to Swindon. His Tottenham debut came at the start of the 2003/4 season as a substitute in a 1-0 defeat to Birmingham. Slipping down the pecking order, he was loaned to QPR. Another loan came in the 2004/5 season to Gillingham but on his return to White Hart Lane, he made an impact scoring twice in a 5-2 win over Everton. Howver he could not guarantee a regular place and finished the season with a totla of 26 appearances in his three seasons.

Dean made his Norwich debut in the 1-1 draw with Coventry on the opening day of the 2004/5 season. A partial rupture of his achilles tendon during the 1-0 home defeat to Sheffield Wednesday on 29th October 2005 ruled Dean out of action for three months and he returned to Spurs for treatment.

On 25th May 2006, Marney was linked with a switch to Steve Bruce's Birmingham but instead joined Hull City on 14th July 2006 for an undisclosed fee.

Marney played a key role in Hull's 2007-8 campaign which saw them reach the Premiership following a play-off final win over Bristol City on 24th May 2008 although Marney was only a late substitute in Hull's 1-0 win - the goal scored by 39 year old Dean Windass who almost came to Norwich in 1995 during Martin O'Neill's reign

Marney and Hull were relegated to the Championship at the end of the 2009/10 season. He joined fellow relegated club Burnley for a figure reported to be £400,000 in May 2010

Marney and Burnley won promotion to the Premier League on April 21 2014 when they beat Wigan 2-0. They were relegated the following season but promoted again in April 2016, with Marney making 12 appearances.

Marney was released by Burnley at the end of the 2017/18 season having made 221 appearances for the Clarets. He was linked with a move to Nottingham Forest but ended up signing for former Burnley teammate Joey Barton, the new manager of Fleetwood Town on 30th July 2018. Marney signed a two year contract. He made just 19 appearances due to a knee cruciate injury experienced whilst at Burnley and was released in July 2020.

He worked as a player's agent whilst completing his UEFA A and B coaching licenses.

On 22nd June 2023 he returned to Burnley to take up a role in their academy coaching their Under-15s and Under-16s.