Rosier won the Primeira Liga and Taça da Liga with Sporting CP in the 2020–21 season. He has also represented France at youth levels, including the U20 team.
Valentin Rosier is a French professional footballer who plays as a right-back for CA Osasuna. He began his career at Dijon FCO before moving to Sporting CP, where he won the Primeira Liga and Taça da Liga. Rosier has also had loan spells at Beşiktaş and Nice, gaining experience in multiple European leagues.
Rosier is an attacking full-back known for his pace, stamina, and ability to deliver crosses from the right flank. Defensively, he can be inconsistent but uses his speed to recover and make tackles. His tactical role often involves overlapping runs to support the attack while providing width in possession.