HITC Sport understands Portsmouth are eyeing the former Burnley and Leicester keeper.
Alex Cisak playing for Oldham Athletic
Former Burnley and Leicester City goalkeeper Alex Cisak is training with Portsmouth with a view to a potential move, HITC Sport understands from sources close to the club.
Cisak is a free agent after leaving Leyton Orient earlier this summer following their relegation from League Two at the end of last season.
The 28-year-old has spent the last two seasons at Brisbane Road after initially impressing on loan.
Cisak first arrived in England when he was spotted by Leicester playing in Australia, but he never made a first-team appearance for the club during his five years with the Foxes.
Portsmouth are in the market for goalkeeping reinforcements with Alex Bass currently the only senior goalkeeper on the books at Fratton Park and they are in talks to sign Tottenham's Luke McGee in a permanent deal.
Alex Cisak: Free agent
Pompey boss Kenny Jackett is keen to add to two new keepers to his ranks as he prepares for life back in League One next season and he will give Cisak the chance to win a deal on the South Coast.
Portsmouth are well aware of Cisak as he had a spell on loan at the club in the 2012/13 season, making just one appearance as his loan was cut short by parent club Oldham.
A number of other League One, Major League Soccer and Australian sides are also weighing up a move Cisak as they look to bolster their goalkeeping options this summer.