A further two clubs have reportedly joined the race to sign Celtic-linked Hannes Wolf.
Ange Postecoglou has been credited with an interest in the Austrian midfielder with his future uncertain at Borussia Monchengladbach.
Reports from the continent suggested Rapid Vienna were the only other serious contenders for his signature but now Fotomac state Turkish duo Trabzonspor and Istanbul Basaksehir are in the mix.
Celtic have been linked with Wolf on a number of occasions over the past few seasons.
It's believed moving him on in January is a priority for the Monchengladbach hierarchy.
Meanwhile, Reo Hatate is expected to arrive in Glasgow on Wednesday.
He will join Daizen Maeda and Yosuke Ideguchi at Lennoxtown after Celtic completed deals to sign the J-League trio last week.
Maeda and Ideguchi have already pitched up in Scotland and Hatate left Japan to join them on Tuesday night.
The 23-year-old has signed a four-and-a-half year deal with the Parkhead side.
Meanwhile, the future of Celtic-linked Zinedine Ferhat remains clouded in uncertainty, with the Nimes playmaker ready to wait out for a move.
St Etienne want him, however, a report in France suggests they are hoping Montpellier buy the playmaker and then loan him out.
