Thomas Minns has asked for forgiveness after failing a doping test.
The Hull KR centre tested positive for a non-performance enhancing substance following a game against Huddersfield Giants earlier this year.
Minns has admitted he took the substance, claiming that he took it on Mother’s Day as he struggled to come to terms with his mother’s death.
In a statement, he said: “I admit to taking a banned substance on Mothers’ Day 2018, which was a hugely difficult day for me following the passing of my mother last year.
“I was low and depressed on the day and I felt at the time I needed to do it to get through. I now totally accept that it was a huge mistake which could cost me my career.
“I can now only ask for forgiveness and for my arguments of mitigation to be heard and understood.
“I do not wish for sympathy. All I ask is that I am listened to and I can make everyone aware that I did not take this substance to enhance my performance at rugby in anyway.”
The 23-year-old has been a reliable player for the Robins since joining the club in 2016, scoring 34 tries in 49 appearances.
KR chief executive Mike Smith confirmed Minns will plead guilty but will ask for a personal hearing.
“Whilst we are obviously disappointed by this as a club, we feel it is very important to stress that this is not just a difficult time for Hull Kingston Rovers, but also for Thomas himself,” Smith said.
“Thomas has expressed his regret and spoken of how he has found life away from the sport of rugby challenging in recent times, particularly since the tragic passing of his mother last year.
“Any decisions over his playing future will be considered at a later stage and are not a matter for now. Our priority is to ensure Thomas is provided with the support he needs.”