Boasting extensive Barclays Women's Super League experience, the attacker – who can operate in midfield or as a forward - made the move to Belvoir Drive following five successful years with the Seagulls.
Whelan was a prominent member of the Brighton squad that won promotion to the WSL in 2018 - the division where the club has remained since and her versatility has seen her play in many positions across midfield and the front line.
The 30-year-old’s previous experience includes spells at MK Dons, Nottingham Forest, Notts County and Everton – who she signed for in 2017 ahead of her move to Brighton – as well as with England Under-23s.