Picard began playing football with his local club Lorgeron-
Torfou and was scouted as a U11 by
Nantes. After being released by Nantes partly due to his slight build, He moved to the youth academy of
Guingamp in 2019, where he continued his development. He made his professional debut with Guingamp as a late substitute in a 4–0
Ligue 2 loss to
Annecy on 8 October 2022. On 3 January 2023, he signed his first professional contract with the club until June 2026. Picard scored his first goal for Guingamp on 4 March 2023, during a league match against
Paris FC. Starting the game, he opened the scoring with a curling shot into the top corner, helping his team secure the win. On 10 January 2025, he had three assists in a 4–1 victory against Annecy. On 14 July 2025, Picard transferred to the
Columbus Crew in
Major League Soccer, signing a contract until 2028, with a one-year extension for 2029. He scored his first two goals for Columbus in a
U.S. Open Cup victory versus
USL League One club
Richmond Kickers on 15 April 2026. He scored a further two goals in the following round of the U.S. Open Cup, against a second USL League One club in
One Knoxville SC. His second goal was the match winner, as he helped Columbus advance to their first quarterfinal berth since 2010. == Style of play ==