Daniel Agger shocked the football world after announcing retirement at the age of 31.
The former Liverpool defender only recently left the Premier league in order to joinBrondby, the club where he started his career. In his eight years at Liverpool,Agger became one of the top ball playing centre backs in the Premier League. The quality within the Danish international was clearly apparent and Barcelona were even trying to sign him for around £ 30 million just a year before he joinedBrondby. However, he has rather quickly announced his retirement after suffering numerous injuries over the last 18 months.