|Full name||Mikkel Agger|
|Date of birth||November 1, 1992|
|Place of birth||Lemvig, Denmark|
|Height||1.79 m (5 ft 10 in)|
|2012–2013||→ FC Hjørring (loan)||12||(3)|
|2013–2014||→ AC Horsens (loan)||14||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 27 March 2016.
Coming through the youth ranks of Thisted FC playing in the Danish 1st Division, he signed a professional contract with the club on his birthday in 2009. Following some impressive displays for Thisted in the 2010/11 season, he went on trials with Danish Superliga clubs AaB and Esbjerg. Agger didn't get a contract at AaB, but Esbjerg fB where keen on signing the striker.
Agger played his first game for the club only three days after joining the club. He was in the starting lineup against FC Sydvest in a Danish Cup game, but had to leave the pitch after only 30 minuted due to a ankle injury.
After returning from his loan spell at FC Hjørring, Agger became the fourth choice in the attack. Agger said to medias, that he haven't got the chance yet to improve, that he's good enough. On 27 June 2014, his contract got terminated.
Loan to FC Hjørring
In the summer transfermarket 2012, Esbjerg fB loaned Kenneth Fabricius from SønderjyskE and therefore, Agger came in surplus. The half-season loan deal at FC Hjørring was announced on 13 August 2012. He went back to Esbjerg with the hope of more playing time and said to medias, that he could feel a personal development.
Loan to AC Horsens
Return to Thisted FC
A month after leaving Esbjerg fB, Agger signed a two-year deal with his former club Thisted FC. He was impressed by the playtime he got in his new club. He scored 25 league goals in his first season, making him the most scoring player in the squad that season. After this successful season, Agger aroused interest from foreign clubs as German club FC St. Pauli. But Agger wanted to stay in Thisted, and extended his contract in May 2016 until 2018.
- "Thisted fremtidssikrer"
- "AaB vil teste Mikkel Agger"
- "Mikkel Agger synes i Esbjerg"
- "Mikkel Agger får fire år i Esbjerg", bold.dk, 3 August 2011
- Mikkel Agger slap med skrækken, bold.dk, 7 August 2011
- Mikkel Agger ophæver i Esbjerg, bold.dk, 27 June 2014
- Esbjerg udlejer Agger til Hjørring, bold.dk, 13 August 2012
- Horsens hapser Mikkel Agger, bold.dk, 2 September 2013
- Mikkel Agger er tilbage i TFC, bold.dk, 25 July 2014
- St. Pauli lurer på Thisted-bomber, bold.dk, 17 August 2015
- Målmaskinen Agger forlænger med Thisted, bold.dk, 10 May 2016