In the 2005–06 season, Davies broke into the Wolves first team under then manager Glenn Hoddle, making his league debut as a substitute against Leeds United on 20 August 2005, losing the game 2–0 at Elland Road.
Former Wolves Academy manager Chris Evans said Davies was the best prospect to come out the youth system since players Robbie Keane and Joleon Lescott.
On 27 November 2008, Davies joined League One side Leicester City on a one-month loan deal in order to gain full match fitness after almost two years on the sidelines.
[7] He made his debut two days after signing when he came on as a substitute in the 2–2 draw with local rivals Blackburn Rovers at Ewood Park.
[8] He scored his second goal for the club in the FA Cup against Lincoln City on 2 January 2010, winning the game 4–0 at the Reebok Stadium.
Davies scored his first league goal for Bolton against Blackpool on 27 November 2010, earning his side a 2–2 draw at the Reebok Stadium.
He scored on the final day of the 2011–12 season, 13 May, in a 2–2 draw against Stoke City but the result wasn't enough to keep Bolton in the Premier League as they needed a win to stay up.
On 23 October 2012, in a Championship match against Wolverhampton Wanderers at Molineux, Davies scored a 90th-minute equaliser against his former club with a left-foot volley from the edge of the box into the far top corner to earn Bolton a 2–2 draw.
Davies captained the England U17 team in the UEFA European Under-17 Football Championship Qualifier against Northern Ireland U17 at Molineux in March 2005.
Davies was called up to the England U21 squad to face Ecuador U21s on 16 February 2010,[16] but had to pull out due to the ankle injury he picked up against Arsenal.