Guessand is a youth academy graduate of
Nancy. He made his professional debut for the club on 28 August 2021, in a 4–1
league defeat against
Auxerre. At the age of 16 years, 9 months and 22 days, he became the youngest player to ever feature in a professional match for Nancy. On 1 July 2022, Guessand joined
Serie A club
Udinese on a three-year deal. He made his first-team debut on 4 June 2023, starting in a 1–0
league loss against
Juventus. In January 2024, he joined
Eredivisie club
Volendam on loan for the remainder of the season. On 4 March 2025, Guessand signed with
Kristiansund in Norway until the end of 2027. On 8 September 2025, Kristiansund announced that Guessand had left the club during the summer after his contract was terminated. On 2 October 2025,
Pafos announced the signing of Guessand. ==International career==