The 21-year-old, who is capable of the spectacular, signed on as an injury replacement for the Reds Argentine star, Marcelo Carrusca.

Choi has played a pivotal role in Blacktown City’s National Premier League side during 2016 where he scored 13 goals in 23 matches.

He also led the side’s charge in the national knockout comp.

The South Korean forward, who now resides in Australia, has signed a short-term deal with the reigning A-League champions.

United Coach, Guillermo Amor, said he was delighted to secure Choi’s services.

“Danny is a good footballer and we have watched him closely,” Amor said.

“He played with us against Sydney last week and he did well, so we are very happy to have him as part of our team.

“He has a lot of speed and the people saw his abilities in the FFA Cup earlier this season scoring a wonderful goal, but also playing very, very well overall. 

“Danny will start training with us and he will fit in with our football well.” 

Choi said he was very grateful for the opportunity and was keen to get off to a great start.

“I am very grateful to have been given the opportunity to play in the A-League and especially for the reigning Champions.” Choi said.

“I’ve been playing the best I could for Blacktown and I have to thank them for the opportunity they gave me. 

“Adelaide noticed the way I was playing for Blacktown and decided I could bring something positive to the club. 

“I’m looking forward to learning a lot during my time with Adelaide and I’m going to give my absolute best every day to help the team in any way I can.”

Carrusca is expected to be sidelined by an ongoing foot injury for the opening few matches.