Neset Kockar, who holds an 8% stake in the UK-based travel firm, said Thomas Cook owes "a few hundred million pounds" to Turkish businesses that may not be paid after it is sold.

Kockar is also the chairman of Turkey-based Anex Tour, which caters mainly to tourists from countries such as Russia and Ukraine.

(Reporting by Ceyda Caglayan; Writing by Ali Kucukgocmen; Editing by Jonathan Spicer)