The 22-year-old joins the club after three years at Tottenham Hotspur, having emerged from the academy at Arsenal and spent a season with Millwall Lionesses.
Dean’s goals helped Spurs secure promotion from the Championship to the Women’s Super League in 2018-19 and establish themselves in the top flight.
The forward, who concluded her Spurs career with 21 strikes in 63 appearances, has also represented England up to U21 level.
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