Inter Milan In mid-2015, Vanheusden joined
Inter Milan's youth academy after seven seasons in the
Standard Liège youth system. He was promoted to
the first team in the last few matches of
2016–17 Serie A; he also appeared as an unused bench for a few matches at the start of
2017–18 Serie A. He also played for
the under-19 team as the starting defender, winning 2016–17
Campionato Nazionale Primavera. On 27 September 2017, Vanheusden injured his cruciate ligament in a
UEFA Youth League match against
Dynamo Kyiv, which kept him out of action for four months. On 26 January 2018, Vanheusden extended his contract with Inter until June 2022.
Loan to Standard Liège On 30 January 2018, Vanheusden joined
Standard Liège until 30 June 2018, with an option to extend for one more year. Vanheusden made his professional debut in a 1–0
Belgian First Division A playoff win over
Gent on 14 April 2018.
Standard Liège On 28 June 2019, Standard Liège signed Vanheusden in a permanent deal for a reported €12.5 million fee, which surpassed
Nicolae Stanciu's record as the most expensive purchase by a Belgium club.
Return to Inter Milan On 13 July 2021, he returned to
Inter Milan.
Loan to Genoa On 20 July, he was sent on loan to
Genoa. He made his
Serie A debut on 21 August against Inter away, at the
Giuseppe Meazza in a 4–0 loss to his team.
Loan to AZ On 25 July 2022, Vanheusden was loaned by
AZ in the Netherlands, with an option to buy.
Loan to Standard Liège On 8 July 2023, he returned to
Standard Liège for the upcoming season.
Loan to KV Mechelen On 25 July 2024, he joined
KV Mechelen for a season-long loan, with an option to buy.
Marbella On 7 August 2025, Vanheusden joined Spanish side
Marbella, signing a one-year contract. On 21 November 2025, Vanheusden announced his retirement from professional football at the age of 26, due to recurring injuries. ==International career==