Born in Coventry, O’Brien began her career at Aston Villa before joining Coventry United (now Rugby Borough) in 2018.
Six goals in 21 appearances earned her a move to Leicester City in January 2021, where she helped the Foxes seal promotion at the end of the season.
O’Brien was a constant figure throughout Leicester’s five-year tenure in the WSL - making 97 appearances and scoring 17 goals in all competitions.
The former England Under-23’s player was Leicester’s top goalscorer in the 2025/26 season – netting five goals in 21 WSL appearances.
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