The Nigeria international has featured 60 games and scored five goals over the last two and a half years with the Green Crocodiles.
Abdullahi who free agent after his contract with Bursaspor has expired at the end of last season but fail to agree on a new deal.
The 27-year-old Super Eagles right-back took his social media to send a thank you message to his former teammate, coach and the fans of the Turkish club.
THANK YOU @BursasporSk.
I will forever cherish this family! 🐊 pic.twitter.com/EjNDQiIt9V
— Shehu Abdullahi (@OfficialShehu) September 19, 2020
Abdullahi started his career with Plateau United before a spell at Kano Pillars, Qadsia SC, União da Madeira and Anorthosis Famagusta.