Valentin Rosier

Valentin André Henri Rosier (born 19 August 1996) is a French professional footballer who plays as a right-back for CD Leganés.

Club career
Born in Montauban, Tarn-et-Garonne, of Guadeloupean, Malagasy and Italian descent, Rosier began his senior career with Rodez AF in the fourth tier in 2015, moving to Dijon FCO of Ligue 1 a year later, on a three-season contract.

Rosier made his professional debut on 31 January 2017, in the last 32 of the Coupe de France, playing the entirety of a 2–1 loss at Bordeaux. Hosting the same opponents on 30 April, he played his first top-flight game in a goalless draw.

On 27 June 2019, Rosier signed a three-year contract at Sporting CP of Portugal's Primeira Liga, for a fee of €7.5 million and the exchange of Mama Baldé to Dijon. He debuted on 15 September in a 1–1 draw away to Boavista FC. His first season was disrupted by foot injuries.

On 2 October 2020, Rosier joined Beşiktaş on loan for the 2020–21 season.

On 11 December 2023, it was officially announced that Rosier has been excluded from the squad along with Vincent Aboubakar, Eric Bailly, Rachid Ghezzal and Jean Onana due to poor performance and incompatibility within the team.

On 16 January 2024, Beşiktaş sent Rosier on loan to Ligue 1 club Nice until the end of the season, with an option to make the move permanent.

On 4 July 2024, Rosier joined newly promoted Spanish La Liga club CD Leganés on a four-year deal.

International career
Rosier earned seven caps for France at under-21 level, all in 2018. On his debut on 23 March, the side won 3–0 away to Kazakhstan in a European qualifier.

Honours
Beşiktaş
 * Süper Lig: 2020–21
 * Turkish Cup: 2020–21
 * Turkish Super Cup: 2021

Individual
 * Süper Lig Team of the Season: 2020–21