The contracts of Alhaji Gero, Godwill Ekpolo and Isaac Boye will all run out at the end of the season in Sweden.
That will make them free agents.
Ekpolo, 26, is a defender with BK Hacken, while Boye, 24, is a striker at Orebro SK.
Boye has failed to establish himself at Orebro and has had to be shipped out on loan to several lower clubs over the years.
Former Flying Eagles striker Alhaji Gero, 27, started his career overseas in Sweden.
He has played for several clubs including Ostersunds.
The Kano-born Gero is currently at second division Helsingborgs IF.
