DEVELOPING Sydney Swans key defender Aliir Aliir has signed a two-year contract extension.

Aliir made his AFL debut in round six against the Brisbane Lions after spending two years developing on the Swans' list after he was recruited with pick No.44 in the 2013 NAB AFL Draft.

Swans football manager Tom Harley said Aliir's contract extension was reward for his development as a player.

"Aliir's story is unique in so many ways but in a pure football sense, his commitment to the Swans and ours to him reflects his football development," Harley told

"Aliir thoroughly deserved his AFL debut and has played at an extremely high level in the NEAFL this year. 

"We look forward to Aliir playing more senior football for the club in the near future and we are delighted to be able to extend his contract by a further two years."

Aliir spent six years in Kakuma refugee camp in Kenya as a child after his parents had fled Sudan to escape a bloody civil war. He began his AFL journey in Queensland after the family migrated there from Africa.

He represented both Queensland and Western Australia in the NAB AFL under-18 championships and is one of the AFL's official multicultural ambassadors.