After three years in the Aston Villa academy, Salmon joined the first team in the WSL 2 for the 2017–18 season. On 8 October 2017, Salmon made her debut in a 2–1 defeat at Sheffield. A month later, she scored her first goal for the club in a 4–0 victory against Watford. On 5 November, Salmon scored in a 2–2 WSL Cup draw against Sheffield, before being dismissed in the final minute of the match. She scored her first brace for the club in a 3–3 draw against the London Bees on 7 January 2018, and went on to score in three consecutive games in April. Salmon scored a total of seven goals in 12 league games, despite her team finishing second from bottom in the table and winning just three of their 18 games.
Manchester United
On 1 July 2018, Salmon joined the newly-formed Manchester United to compete in the FA Women's Championship. On 4 January 2019, Salmon moved to fellow Championship side Sheffield United on loan until the end of the season having not yet made her United debut. She was released at the end of the season having not made an appearance for the club.
On 15 July 2019, Salmon signed with Bristol City ahead of the 2019–20 FA WSL season. She made her debut on the opening day of the season on 7 September 2019, in a 0–0 home draw against Brighton & Hove Albion. Salmon scored the only goal in a 1–0 away win against former club Manchester United to secure Bristol City's first win of the season on 5 January 2020. Salmon was Bristol City's highest goalscorer in the WSL for the 2019/20 season, scoring 5 goals - ensuring that Bristol City avoided relegation - as they finished 10th.
International career
On 28 April 2017, Salmon made her debut for England Under-17s in a 2–0 defeat to the United States. In her third appearance for the national team, she scored both of her country's goals in a 6–2 defeat in the United States after coming on as a half-time substitute. Salmon also scored in the following match, a 10–0 victory against Latvia, and added two goals in 6–0 win against Slovakia in October 2017 to help qualify for the UEFA Women's U17 Championship. In May 2018, Salmon captained England at the tournament. After scoring in a 2–1 defeat to Spain, Salmon scored a hat-trick in 18 minutes against Italy to secure a place in the knockout rounds. She appeared in the semi-final and third-place fixtures as England finished the tournament in fourth.
