The NRL have asked the Sydney Roosters for a report into revelations police and paramedics rushed to the home of star Blake Ferguson on Thursday morning.

Authorities moved in on Ferguson's home amid concerns for the player's young children, reportedly following a phone call from former teammate Paul Carter.

According to the Sydney Morning Herald, Carter claimed to police that Ferguson's one-year-old child had been drugged but ambulance officers were comfortable this had not happened after checking both of his sons.

The newspaper reported Ferguson and Carter had been drinking until about 3am before Ferguson asked his friend to leave.

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"Emergency services were called to a home at Wemyss St in Marrickville this morning after concerns were raised for the welfare of children," a police statement said.

"Officers from Marrickville Local Area Command attended about 5.15am and spoke with a 27-year-old man. NSW Ambulance paramedics checked two young children but no further police action is anticipated as this time."

The Roosters, who have been contacted by the NRL, have been sought for comment.

"The integrity unit is aware of the matter and has asked the Roosters to provide a report," an NRL spokesperson said.

Both Carter and Ferguson drew headlines this year for separate off-field incidents.

Carter, 25, was sacked in June this year after being involved in a drugs scandal that resulted in him earlier this month pleading guilty to supplying cocaine to an ex-teammate.

Ferguson, 27, also attracted criticism for drinking on his day off during NSW State of Origin camp before their game three deciding loss to Queensland in Brisbane.

He also recently missed Kangaroos selection for the upcoming World Cup due to form.

Ferguson's manager, Sam Ayoub, has come to the defence of his client.

"Blake is not in trouble with the Roosters," Ayoub told the Sydney Morning Herald.

"He is not at fault. It's an unfortunate situation that he has been caught in the middle of. He let a mate in for a few drinks and that is all. Blake is extremely upset about what has happened because he has done nothing wrong."