The Argentinian striker signed an incredible multi-million dollar-deal late last year, but is yet to feature for the club as the Chinese Super League does not begin until March, while Shenhua's Asian Champions League campaign on February 8.
It is understood that Shanghai wanted to face an Australian team, prior to their likely Asian Champions League play-off round match with Brisbane Roar on February 8.
The Roar must first over-come the winner of Global, from the Philippines, and Singaporean side Tampines Rovers who play January 24. John Aloisi's men then take on the winners in the second Preliminary rround on January 31.
Tevez is reportedly paid over $1 million a week, and should he line-up against Sydney United he'll face former A-League players such such as Glen Trifiro, Panny Nikas and Chris Payne.
Shanghai's team also features the likes of Nigerian international Obafemi Martins and Colombian internationals Fredy Guarin and Giovanni Moreno.
Speaking to Football NSW's website, Sydney United captain Nick Stavroulakis said:
“It’s a once in a lifetime opportunity to have been given this chance to play against one of Asian football’s best clubs.
“To think that we could face players such as Carlos Tevez, Obafemi Martins and Fredy Guarin is quite surreal and has not sunk in yet."