Tierney Scott has signed a new Pompey contract, subject to FA approval.
The 19-year-old forward has penned a one-year deal, with a club option of an additional 12 months.
Scott joined the Blues back in July 2022 following her departure from Reading.
She made 32 appearances in her debut campaign, scoring five goals for Jay Sadler's side.
The Blues boss said: "We are thrilled that Tierney has signed this contract. She is a young player that we all really believe in.
"Throughout last season she consistently impressed and rose to every challenge that she faced.
"Tierney is extremely dedicated – she has the work-rate and attitude to keep improving every day and succeed at this football club."
Scott added: "I'm really excited to be part of the new era for Pompey.
"Last season my confidence grew because of the girls' support and I’m ready to bring it into the new season.
"This is an amazing opportunity for the club and I’m proud to be a part of it."