Aston Villa Mikaelsson signed for
Aston Villa in August 2005 from Swedish
Superettan side,
Ljungskile – the team he also supports. He never played a game for the Villa senior team. Still, he made appearances at the youth level and for the
Reserves, where he had a prolific goalscoring record. Mikaelsson was thought to have a very bright future ahead of him, some pundits had previously tipped him to become a star while he was at youth level, and follow the footsteps of his boyhood idols
Zlatan Ibrahimović and
Henrik Larsson. Mikaelsson joined his old club
Ljungskile on
loan on 15 March 2007 to gain first-team experience, and he scored one goal and provided five assists in the stint. On 18 September 2007, he scored his first
hat-trick for Villa Reserves – in a 4–1 victory against
Derby County. In January 2008, Mikaelsson joined
Port Vale on a one-month loan deal, joining up with team-mate
Chris Herd. He played six games for the
League One club, Vale lost four and drew two games. After Mikaelsson returned to
Villa Park following an ankle injury, Vale were
relegated. In July 2008, Mikaelsson was rewarded with a one-year
contract extension, keeping him at the club until the summer of 2009. He had a five-day trial with
BK Häcken in January 2009. In April 2009, he had an unsuccessful trial at League One
Hartlepool United following release from Aston Villa.
Sweden Mikaelsson returned home to Sweden and signed for
Trollhättan in July 2009. In his
first season in the
Superettan, Mikaelsson scored a single goal in 18 appearances for Trollhättan. During the
2010 season, Mikaelsson managed to score 5 goals in 29 appearances for the club, The club finished second in
2013, but were beaten by
Varbergs BoIS in the qualification play-offs. They finished in fifth place in
2014, fourth in
2015, and seventh in
2016. He scored two goals in 11 appearances during the
2017 season as the club finished in ninth place. In January 2018, Mikaelsson dropped down a level to sign a two-year contract with
Division 2 side
Stenungsund. The "Red Brothers" ended the
2018 season fifth in the Norra Götaland region. He signed with
Division 4 side
Kongahälla in 2020. He joined Svenshögen in 2022. ==Style of play==