NRL star Semi Radradra is alleged to have assaulted his former partner numerous times over an eight-month period dating back to 2014.
Police are investigating the accusations after his ex-partner, Perina Ting, made a statement at Rosehill police station on Tuesday.
Ting has applied for an apprehended violence order against Radradra.
"A 26-year-old woman attended Rosehill Police Station, and reported that her partner a 24-year-old man, assaulted her on a number of occasions between September 2014 and April 2015, at their home in Parramatta," NSW police said in a statement.
The latest revelations come after the 24-year-old was a no-show at Parramatta training on Wednesday and was instead granted yet another extension on his Fiji holiday to deal with personal issues.
Radradra was expected to return from his club-sanctioned trip last Sunday, however it has been widely speculated to be considering walking out on the NRL to pursue a move to French rugby.
His manager George Christodoulou had earlier guaranteed his client would not only be back to take on Cronulla in an NRL fixture on Saturday, but promised he would also serve out the remainder of his current contract.
Radradra's current deal finishes at the end of the 2017 season.
Eels players insist they are happy for their troubled teammate to walk straight back into the line-up to take on the Sharks despite missing a large chunk of their preparation.
"I think he's in the best three players in the world at the moment so if he wants to turn up and throw the boots on and walk out, I'm happy with that," prop Danny Wicks.