Background
Daniel is the cousin of Matthew Mullen and son of former Socceroo Joe Mullen.
Daniel is the cousin of Matthew Mullen and son of former Socceroo Joe Mullen.
His natural position is at centre back but he plays regularly at right back at club level In his first game for Australia he became the first Socceroo to wear a 3 digit number wearing 107 against Kuwait on 6 March 2009. Adelaide United
Mullen joined United for the 2008-2009 A-League season.
On 26 July 2008 he made his debut for Adelaide United in a 0–0 against Newcastle Jets in the Pre-Season Cup.
He played in Adelaide"s Champions league semi final"s 1st leg 3–0 victory over Uzbekistan outfit Bunyodkor and was surely the best game in his short career. In November 2008 Daniel signed a new two-year deal with Adelaide keeping him at the club until the end of the 2010-2011 season.
Mullen began to hold down a regular starting spot at right back for Adelaide including starting the inaugural Fédération internationale de football association Club World Cup game for the South Australian team in which he scored the equalising goal against Waitakere United. Mullen scored his first league goal for Adelaide with a powerful header in the 3–2 victory over North Queensland Fury in Townsville in Round 4.
He had some trouble holding a spot the first team squad with Robert Cornthwaite and Iain Fyfe regularly used at centre back.
Dalian Aerbin
In July 2012 Mullen signed a two-year deal with Dalian Aerbin in the Chinese Super League. Melbourne Victory
Daniel Mullen Joined Melbourne Victory on loan for the second half of the 2012-2013 season. Western Sydney Wanderers
On 3 February 2014 he signed, along with Golgol Mebrahtu, with Western Sydney Wanderers.
However, since there were no spaces remaining in the club"s A-League squad, Mullen was only eligible to participate in Western Sydney Wanderers" 2014 AFC Champions League campaign during the 2013-2014 season.
On 18 March 2014, following a long term injury to Golgol Mebrahtu, Mullen was added to Western Sydney Wanderers" A-League squad. Mullen parted ways with the Wanderers on 30 January 2015.
Mullen debuted for the Australian national team in a qualifying match for the 2011 AFC Asian Cup against Kuwait in March 2009. Western Sydney Wanderers
AFC Champions League: 2014.