Lacazette scored Lyon's only goal in the 2014 Coupe de la Ligue Final against Paris Saint-Germain; however his side lost 2–1.

In September 2014, Lacazette signed a two-year extension to his contract, tying him to the club until 2018.
He scored his first hat-trick on 5 October 2014, scoring all the goals in a 3–0 Ligue 1 home win over Lille.
On 26 April 2015, Lacazette broke the Lyon record for Ligue 1 or Division 1 goals scored in a single season with his 26th in a Ligue 1 4–2 away victory over Reims; André Guy had scored a total of 25 Division 1 goals in the 1968–69 season.
He finished the 2014–15 Ligue 1 season as the top scorer in Ligue 1, scoring a total of 27 goals.
Lacazette completed an outstanding season by being voted Ligue 1 Player of the Year for the 2014–15 season.

Amid transfer speculation from a number of Premier League clubs such as Arsenal following his break-out season, on 8 August 2015, Lacazette signed a new deal, extending his contract with Lyon until 2019.
On 8 November 2015, he scored all of the goals in a 3–0 Ligue 1 home win over local arch-rivals Saint-Étienne.
On 9 January 2016, he scored the first goal at the newly opened Parc Olympique Lyonnais, in a 4–1 win over Troyes in a Ligue 1 match.
Lacazette scored Lyon's only goal in the 2014 Coupe de la Ligue Final against Paris Saint-Germain; however his side lost 2–1.
In September 2014, Lacazette signed a two-year extension to his contract, tying him to the club until 2018. He scored his first hat-trick on 5 October 2014, scoring all the goals in a 3–0 Ligue 1 home win over Lille. On 26 April 2015, Lacazette broke the Lyon record for Ligue 1 or Division 1 goals scored in a single season with his 26th in a Ligue 1 4–2 away victory over Reims; André Guy had scored a total of 25 Division 1 goals in the 1968–69 season. He finished the 2014–15 Ligue 1 season as the top scorer in Ligue 1, scoring a total of 27 goals. Lacazette completed an outstanding season by being voted Ligue 1 Player of the Year for the 2014–15 season.
Amid transfer speculation from a number of Premier League clubs such as Arsenal following his break-out season, on 8 August 2015, Lacazette signed a new deal, extending his contract with Lyon until 2019. On 8 November 2015, he scored all of the goals in a 3–0 Ligue 1 home win over local arch-rivals Saint-Étienne. On 9 January 2016, he scored the first goal at the newly opened Parc Olympique Lyonnais, in a 4–1 win over Troyes in a Ligue 1 match.
Alexandre Lacazette