Michael Paul Doyle (born 8 August 1981) is a former professional footballer and was most recently assistant head coach at League One club Forest Green Rovers. Born in Dublin, Doyle started his career at Celtic before a spell on loan in Denmark playing for AGF Aarhus. He subsequently spent the majority of his career at Coventry City and Sheffield United. Doyle has also been capped once by the Republic of Ireland. Club career Early career Doyle began his career as a trainee at Celtic turning full professional for them in August 1998. He and fellow Celtic teammate Liam Miller had a spell on loan in the Danish Premier League at club AGF Aarhus, with Doyle playing 22 League games and scoring four goals for the Danish side. During his time at Celtic, Doyle failed to make a single league appearance for the first team. Coventry City After the loan spell ended, Doyle signed for Coventry City which was managed by Gary McAllister after a successful trial, having been recommended by McAllister's assistant Eric Black who worked with Doyle at Celtic. Doyle made his début against Peterborough United in the Football League Cup in August 2003, and scored in his appearance away against Ipswich Town in a 1–1 draw. Doyle played regularly throughout the season either side under the management of both McAllister and his successor Black. Under Peter Reid, Doyle continued to play whenever fit, forging a useful partnership with captain Stephen Hughes. After Reid's departure Doyle continued to be favoured by new manager Micky Adams, scoring in the crucial away win at Watford, as the side avoided relegation from the Championship. In 2005–06, Doyle continued to play regularly, captaining the side on a number of occasions since Christmas, notably in the 2–0 home win over Wolverhampton Wanderers. This came in his first match after a suspension for his dismissal in the previous home game against Crewe Alexandra for arguing with the referee. Doyle was named permanent captain of Coventry by Iain Dowie. Doyle was part of the Coventry team that beat Manchester United in the League Cup at Old Trafford, which remains one of the most famous League Cup upsets in recent years. During the 2008–09 season, Doyle was a regular under Chris Coleman, starting 39 games for Coventry in all competitions. But due to the signing of Sammy Clingan from Norwich in the summer of 2009, Doyle found