Prior to the 2017–18 season, Cavani was joined at the club by Brazilian forward Neymar, who moved to PSG in a transaction worth €222 million making him the world's most expensive player, and 18-year-old French prodigy Kylian Mbappé, a loan signing with the club having an option to sign him for €180 million.
Cavani, Neymar and Mbappé immediately formed a formidable attacking trio, with Cavani scoring in each of PSG's opening three games of the 2017–18 UEFA Champions League group stage, twice in the team's 5–0 win at Celtic, once in the 3–0 win at home to Bayern Munich, and once in the 4–0 win at Anderlecht.

On 22 October, Cavani scored a curling free kick off the crossbar to earn PSG a 2–2 draw in Le Classique away to Olympique de Marseille.
The following month, he scored twice in the return leg against Celtic in a 7–1 win.
The result saw PSG break the record for the most goals scored by a club in the group stages of the Champions League, with 24.
On 4 November, Cavani's goals in a 5–0 win at Angers made him only the third player to score 100 times in two of Europe's five best leagues, after Ibrahimović and Gonzalo Higuaín.

Cavani became PSG's all-time top scorer on 27 January 2018 with a goal in a 4–0 home win over Montpellier.
He surpassed Zlatan Ibrahimović's record with his 157th goal in his 229th match.
On 8 May 2018, he scored as PSG won 2–0 against Les Herbiers VF to clinch the 2017–18 Coupe de France.
Prior to the 2017–18 season, Cavani was joined at the club by Brazilian forward Neymar, who moved to PSG in a transaction worth €222 million making him the world's most expensive player, and 18-year-old French prodigy Kylian Mbappé, a loan signing with the club having an option to sign him for €180 million. Cavani, Neymar and Mbappé immediately formed a formidable attacking trio, with Cavani scoring in each of PSG's opening three games of the 2017–18 UEFA Champions League group stage, twice in the team's 5–0 win at Celtic, once in the 3–0 win at home to Bayern Munich, and once in the 4–0 win at Anderlecht.
On 22 October, Cavani scored a curling free kick off the crossbar to earn PSG a 2–2 draw in Le Classique away to Olympique de Marseille. The following month, he scored twice in the return leg against Celtic in a 7–1 win. The result saw PSG break the record for the most goals scored by a club in the group stages of the Champions League, with 24. On 4 November, Cavani's goals in a 5–0 win at Angers made him only the third player to score 100 times in two of Europe's five best leagues, after Ibrahimović and Gonzalo Higuaín.
Cavani became PSG's all-time top scorer on 27 January 2018 with a goal in a 4–0 home win over Montpellier. He surpassed Zlatan Ibrahimović's record with his 157th goal in his 229th match. On 8 May 2018, he scored as PSG won 2–0 against Les Herbiers VF to clinch the 2017–18 Coupe de France.
Edinson Cavani