At the age of 20, Pierre played for the French U-21 team after earlier being called to the Italian U-19 side.
ໃນຕອນອາຍຸຂອງ 20, Pierre ໄດ້ຫຼິ້ນສໍາລັບທີມງານ U-21 ຝຣັ່ງຫຼັງຈາກນັ້ນໄດ້ຖືກເອີ້ນໃຫ້ຝ່າຍ U-19 ຂອງອິຕາລີ.