Pompey will play Brighton as part of their pre-season tour of Spain and Gibraltar.
A friendly with the Championship side has been pencilled in for Tuesday, July 24, at Barcello Montecastillo Resort in Cadiz (6pm).
Tickets can be purchased on the day of the game.
The match will follow the Blues’ fixture against Gibraltar, which is being held on Friday, July 20.
Pompey kick-off their pre-season schedule with a game against the Hawks this Saturday at Westleigh Park, before flying out to Spain on Monday.