Date of birth
Striker joined Pompey from Hampton & Richmond during the January transfer window in 2017.
Having already netted 16 goals for the non-league side in the first half of the campaign, Kabamba linked back up with former Borough teammate Jamal Lowe at Fratton Park.
The former used car salesman made his first team debut at Stevenage on March 18, featuring on three more occasions before the end of the campaign.
Kabamba previously turned out for Burnham and Hemel Hempstead, and scored at Bath in his final appearance for Hampton.