On 30 January 2018, Vanheusden joined Standard Liège until 30 June 2018, with an option to extend for one more year.[11] Vanheusden made his professional debut in a 1–0 Belgian First Division A playoff win over Gent on 14 April 2018.[12]
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.[13][14]
On 20 July, he was sent on loan to Genoa.[16] He made his Serie A debut on 21 August against Inter away, at the Giuseppe Meazza in a 4–0 loss to his team.[17]
Loan to AZ
On 25 July 2022, Vanheusden was loaned by AZ in the Netherlands, with an option to buy.[18]
Loan to Standard Liège
On 8 July 2023, he returned to Standard Liège for the upcoming season.[19]
Loan to KV Mechelen
On 25 July 2024, he joined KV Mechelen for a season-long loan, with an option to buy.[20]