Oona Siren joined West Ham United in September 2024. 

The midfielder signed a two-year contract in east London, and was Rehanne Skinner’s eighth signing of a busy 2024 summer transfer window. 

Siren played for Finnish top division sides Tikkurila Palloseura [TiPS] and Kuopio Palloseura [KuPS]. During her time with KuPS, she won the Kansallinen Liiga titles in both 2022 and 2023, also appearing in the UEFA Women’s Champions League qualifying rounds on six occasions. 

She then joined Lillestrøm-based outfit LSK Kvinner, before making the move to England and joining the Hammers.