Sead Kolašinac is a professional footballer who plays as a left-back for Serie A club Atalanta and the Bosnia and Herzegovina national team. Kolašinac started his club career with Schalke 04, playing first in its reserve team, before joining Arsenal in 2017. In 2021, he was loaned back to Schalke. The following year, he moved to Marseille, before signing for Atalanta in 2023. Wikipedia