Quinn most recently played for Fiorentina and helped Viola to finish fourth in the 2020/21 Women’s Serie A.
The Republic of Ireland international confirmed she would be leaving the Italian side in July 2021, with Blues subsequently revealed as her new home.
Quinn was named as Captain ahead of the 2021/22 Barclays FA Women’s Super League season.
The 31-year-old embarked on a playing career in her homeland, representing both Peamount United and University College Dublin, and won the Irish Cup at the second attempt with the former in 2010. A year later the centre-back scored a hat-trick in a UEFA Women’s Champions League qualifier against ŽNK Krka of Slovakia.
Quinn’s success on the Emerald Isle saw her move to Sweden in January 2013, helping Eskilstuna United to promotion from the second division and then a seventh-place finish in the Damallsvenskan.
In 2015, the team finished runners-up to FC Rosengard, subsequently qualifying for the Champions League as Quinn became an ever-present in the league before moving back to England and briefly joining Notts County.
A switch to Arsenal followed in May 2017, with Quinn making over a half-century of appearances across three years in North London and winning both the Continental FA Women's Continental Tyres League Cup (2017/18) and the Barclays FA Women's Super League (2018/19).
For her country, Quinn has received more than 80 international caps, scored 11 times and in both 2013 and 2019 was named the FAI’s Women’s Player of the Year.