Matthew Mills is an English defender who was born in Swindon on 14th July 1986. He began his career with Southampton, and was part of the clubs successful youth setup, which also brought through the likes of Theo Walcott and Gareth Bale. Mills made his professional debut while on loan at Coventry on September 18th 2004 in a 0-0 draw with Rotherham. After spending a month at The Ricoh Arena, Mills joined Bournemouth on loan in February 2005 until the end of the season. The defender opened his goal scoring account for The Cherries on 26th February against Tranmere, and scored two other goals for the Dean Court outfit.
Mills made his Southampton debut on 22nd August 2005 in a 3-0 Carling Cup victory over Southend. He struggled to force his way into the starting eleven in the league however, with Claus Lundekvam and Darren Powell performing well in the central defensive positions. He did receive a few opportunities in December 2005 after George Burley replaced Harry Redknapp as Saints manager.
On 31st January 2006 Mills signed for Manchester City for £250,000. City assistant boss Steve Wigley played a big role in bringing the defender to Eastlands, having previously coached Mills at youth level with Southampton. He made his one and only appearance for Man City in 2005/06 on 25th March, when he replaced his namesake Danny Mills in a 2-0 defeat at Chelsea.
Mills made just one more appearance in a 4-0 defeat at Wigan on 21st October 2006. On 26th February 2007 he made joined Colchester on loan for three months. Mills helped The U's to a 2-1 win against former club Southampton on 16th March in his final appearance for the club.
Mills spent most of the 2007/08 season on loan at Doncaster Rovers. He helped the League 1 outfit win promotion to the Championship through the play-offs. Mills scored his first goal for the club on 26th September 2007 in a 2-0 win over Cheltenham. On 31st July 2008 he signed a permanent deal with Doncaster, when the Yorkshire club paid a record £300,000 for the former Manchester City defender. Mills was in fine form at the Keepmoat for most of 2008/09, helping Donny to a very respectable 14th placed finish. He scored an own goal against former club Southampton on 27th September 2008.
On 5th August 2009 Mills signed for Reading for £2,000,000. He made his debut for the club on 11th August 2009 in a 5-1 win over Burton in the League Cup. Mills scored his first goal for The Royals on 22nd August 2009 in a 3-1 home loss to Sheffield United. The former Doncaster man lead by example at the Madjeski, and was often used as the team's captain. He was sent off twice in 2009/10, against former club Doncaster and Ipswich.
In 2010/11 Mills helped Reading reach the Championship play-off final and FA Cup quarter finals. He scored the only goal of the game in Reading's shock 1-0 FA Cup victory at Goodison Park on March 1st 2011. Mills also netted in the 4-2 play-off final defeat to Swansea on 30th May 2011.
On 7th July 2011 Mills signed for Leicester for a reported fee of £5,500,000.