Younis signed for Adelaide in 2008 after an impressive two seasons for APIA Leichhardt in the NSW Premier League which saw him net a phenomenal 38 goals in just 43 appearances. After an indifferent start to his professional career at United, Robert came on as a 78th minute sub against Perth Glory and made an immediate impact setting up Brazilian Alemão to equalise in the eventual 2–1 win.
In April 2009, a goal shy Robbie was released from Adelaide United by mutual consent. He has since re-signed with former club, APIA Leichhardt for the 2009 NSW Premier League season.
As of 26 April 2009, Robbie has played 7 games for APIA and has yet to score a goal.
On 2 May 2009, Younis finally got on the scoresheet with a well taken penalty against bitter rivals Marconi Stallions.
Robbie continues to lead the line for APIA and had an exceptional 2010 season where he banged home 16 goals.
Kwabena Appiah-Kubi (born 1992) is a New Zealand-born professional footballer who plays as a winger for Nakhon Ratchasima in Thai League 1. Appiah also holds Australian citizenship.
Born in Auckland of Ghanaian parents, Appiah arrived in Sydney, Australia, as a six-year-old. He started playing football in the Granville Association, and came of age in the Western Sydney region at Parramatta City, Granville Rage and Spirit FC. He lived in Parramatta, and was educated at Parramatta Marist Brothers. Having never made a competitive international appearance, Appiah remains eligible for New Zealand, Australia and Ghana
Central Coast Mariners
Western Sydney Wanderers
On 25 June 2012, Appiah joined Western Sydney Wanderers as one of the club’s first three signed players. On 6 October he made his A-League debut against his former youth club, Central Coast Mariners, in the Wanderers’ first ever competitive match.
Appiah won the A-League Minor Premiership and the Asian Champions League at his time at the club along with winning the VISY Wanderers Asian Champions League player of the year award.
On 31 January 2015, Appiah left Western Sydney Wanderers, with the players contract terminated by mutual consent.
Return to Central Coast Mariners
At the end of his contract, Appiah was released by the Phoenix, and subsequently returned to Central Coast Mariners on trial. After a successful trial, Central Coast Mariners signed him on a one-year deal. Appiah scored his first ever A-League goal against Adelaide United on the 5th of February, lobbing the opposition goalkeeper. On 29 May 2017, Appiah signed a one-year contract extension with Central Coast Mariners.
On 31 January 2018, Appiah left the A-League to move to Korean club Incheon United. He made his debut for Incheon on the opening day of the K League 1 season against Gangwon FC in March. He scored his first goal for the club against Pohang Steelers in August. On 16 January 2019, Appiah left Incheon United after nearly a year with the K League 1 side.