Brougham made four league starts for City in the 2014 FA Women's Premier League season.
Broughm explains her decision
The 19-year-old said that Everton were a great club, and she also revealed that she couldn't say no to the Blues after she spoke to manager Andy Spence about his "future plans and how he develops players".
Brougham revealed that her decision was influenced by former Manchester City and current Everton goalkeeper Alex Brooks, with the latter telling her how "close knit the squad was" and "how much [Brooks] had enjoyed her stay so far".
Brougham revealed that she wanted to help Everton back to the WSL 1 and "where they belong", along with being as successful as they can in the cup competitions.
Everton manager Andy Spence believes Brougham would "fit in the squad easily" and was a "great addition to the squad as [Brougham] can play a number of positions".
He also believed Brougham was "a talented player" who would "enhance" the squad Everton already have.
He spoke highly of the 19-year-old's versatility, saying that she was capable of playing both centre back and full back, along with being "a highly technical player".
Busy window for Everton
Brougham is Everton's third signing of the transfer window after the Blue Ladies completed the signings of Alex Brooks and Jenna Dear from Manchester City and Chelsea Ladies respectively. In addition Michelle Hinnigan, Claudia Walker, Gabby George, Simone Magill, Ellie Stewart, Vicky Jones, Kelly Jones, Channy Boye-Hlorkah, Emily Hollinshead and Kirsty Levell all have signed new deals at the Merseyside club.
Everton cruised past Stoke City 7-0 in the FA Cup 3rd round, setting up a meeting with either Nottingham Forest or Preston North End on 28th February. They begin their league campaign against Aston Villa at the Select Security Stadium on 24th March.