United travel to Raiders tomorrow night (Tuesday) at the Croatian Sports Centre at State Sports Park in Adelaide's north.

The match will be the third and final local hit out before The Reds line up in their first A-League trial match against Perth Glory at Hindmarsh Stadium on Friday 26 June.

Reds coach Aurelio Vidmar will use tomorrow night's match to continue building up the match fitness of his squad, while he will also use it as an opportunity to look at more trial players, the latest being 20-year-old Korean-born attacking midfielder Shin In Sup.

Goalkeeper Mark Birighitti is set to get his first game time during this pre season campaign after he returned from international duty with the Young Socceroos, however Australian Under 20 team mate Daniel Mullen will not play due to a slight hamstring strain.

Fabian Barbiero, Cassio, Adam Hughes and Lucas Pantelis are all still another week away, Vidmar planning on having the quartet ready to return to face the Glory on Friday week.

Experienced Raiders midfielder Mimi Saric, who played with Perth Glory and was also a member of United's inaugural squad in 2003, will be looking forward to mixing it in the middle of the park against the likes of Paul Reid, Kristian Sarkies and Travis Dodd, while former Reds defender Richie Alagich, now playing with Raiders, may also make an appearance.

Kick-Off is at 7.30pm (ACST) and admission is free.