Date of birth
Pompey signed Hackett from non-league Bromley at the beginning of 2020.
The forward progressed through the ranks at Dagenham & Redbridge and signed for Charlton following a successful trial.
He made 24 appearances for the Addicks and featured in an EFL Trophy defeat to Pompey at The Valley.
The Londoner then moved to Bromley in the summer of 2019, having ended the previous season on loan with the National League outfit.
A prolific spell with them attracted Pompey's interest, although Hackett has since had loan stints back with his previous club and also at Southend.