Parramatta Eels star Semi Radradra has been charged with alleged domestic violence offences after being arrested at Sydney Airport on Thursday night.

The 24-year-old was arrested and questioned after he arrived back in Australia from Fiji.

Parramatta Eels coach Brad Arthur says he approved Radradra's trip to Fiji. ( ABC News: Ben Worsley )

Police said he had since been charged with assault causing actual bodily harm domestic violence, and two counts of common assault domestic violence.

He was also served with an apprehended violence order.

Radradra was released on conditional bail and is expected to appear in Parramatta Local Court on Tuesday.

The allegations relate to a past relationship, and the assaults allegedly took place in 2014 and 2015.

Radradra trained with the team today and is expected to play tomorrow.

In a press conference this morning, Eels coach Brad Arthur said he wanted Radradra to play.

"The first process is talk to Semi and his manager and see how he is," Arthur said.

"The priority for us is his welfare.

"Until I've spoken to him, it's very hard [to determine what to do next]."

He said he gave him permission to go to Fiji and Radradra was committed to the club.

"It's difficult. His family are in Fiji.

"He's coming back a little bit late but his commitment is based on what he does on the training field ... and what he does on the football field with us."

When asked whether Radradra getting extra time off set a dangerous precedent for other players, Arthur said every player was different and every case was different.

"Michael Gordon, we gave him time to go away with his family last week."

He said he was confident Radradra would finish his contract with the club.

'It's been a challenge for us all year'

Arthur said he had not spoken to Radradra or the other players as yet but he expected to speak to him this morning.

"They trained well during the middle of the week, I'm sure they will train well today," he said.

He said only Radradra's manager had spoken to him while he was in Fiji.

"It has been a challenge for us all year. It hasn't been easy sailing for us but to the players' credit, I'm proud of them, the coaching group is proud of them."

In a statement, Eels director Geoff Gerard said the club was treating the matter seriously.

"In accordance with our club's values, Semi will be afforded the presumption of innocence, and we will continue to provide him and his family with all the support and welfare services we have available," Mr Gerard said.

"The club will work closely with the relevant authorities and be open with the NRL Integrity Unit throughout this process."

Public figures 'need to be prepared to step aside'

Professor Catharine Lumby, an advisor for the NRL's cultural change and education programs, said she was disappointed that Radradra would most likely be playing tomorrow.

Catharine Lumby says Radradra should have stepped down when he was charged. ( ABC News )

"I know the NRL has shown very long-term commitment to preventing violence against women, speaking out against it and educating players about it, but I think you've got to walk the walk, not just talk the talk," she said.

"If you're a public figure and a role model, that the cost of that, is if you're charged with a serious crime, and domestic assault is a serious crime, you need to be prepared to stand yourself aside, or be stood down, while the charges are pending.

"These guys have a lot of privileged, a lot of benefits that go with their roles as elite athletes and that's the price they pay.

"[Radradra] represents the brand of the NRL, he represents a role model to a lot of young Australians, he should have the guts to stand aside."

Hayne gives advice in chance airport meeting: 'run a tight ship'

Former NRL and NFL player Jarryd Hayne, who had been in Fiji to train with the country's rugby sevens team, flew into Sydney on the same flight as Radradra.

Hayne said it was a coincidence he was on the same flight, but it gave him the chance to share some advice with Radradra.

"When I called the guys at Fiji Airways today, they were like, 'you wouldn't believe it, Semi's on your same flight'. I said 'no way'," Hayne said.

"It was good to spend time with Semi, I hadn't obviously been able to catch up with him ... so it was great just being able to sit at the airport and just go into a good conversation with him and try to help him out as much as I can.

"It's been a bit of mayhem by all reports, but I think the biggest advice I gave to him was to run a tight ship."