The 20-year-old impressed Sparta coach Frank Rijkaard (pictured) during a trial earlier in the year and was swiftly offered a two-year deal.
Rijkaard has Frank Kooiman and Viktor Kros currently occupying the first two slots, and has been on the lookout for a young keeper for some time.
Vandenbussche is the man he has placed his faith in, with the Brugge custodian likely to fight for a starting place next term.
