Highly-rated left-back Mattock joined Albion for an undisclosed fee in August 2009.

The defender penned a three-year contract, plus an extra year's option in the club's favour.

Mattock, who had already been capped five times by England Under-21s when he arrived at The Hawthorns, can also operate at left-midfield.

Mattock made his professional bow for previous club Leicester at the tender age of 16, coming on as a second-half sub against Norwich at the Walkers Stadium in April 2007.

The Leicester-born player, who has also represented England at Under-15, 16, 17 and 19 levels, established himself in the Foxes line-up the following campaign, making 33 appearances.

One of those more memorable games was his impressive performance in City's 4-1 victory at The Hawthorns in March 2008 - the Baggies' final league defeat before lifting the Coca-Cola Championship trophy.

Mattock also played a key role in the Foxes' League One title success during 2008/09, making 36 appearances and scoring his first-ever senior goal in a 2-0 win at Yeovil in January.

In total, Mattock played 73 times for Leicester, including 12 appearances as a sub, scoring once.

Sponsored by West Mid Vehicles