Among them, Sky reports, is Cook’s Chinese joint venture partner Fosun International, which currently holds around a 17% stake in the company.
Other suitors include EQT, owner of Switzerland’s Kuoni Group, and KKR, the London-based owner of Travelopia.
Thomas Cook declined to comment when approached by TTG on Tuesday morning (23 April). Cook has called a general meeting for 29 April.
The reported interest follows Cook’s decision to place its group airline up for sale earlier this year.
Cook plans to shut a further 21 retail stores, placing 320 jobs at risk, and further shift its focus towards its digital channels and own-brand hotel operation.
The company posted a group-wide pre-tax loss of £163 million last year, while its net debt increased to £389 million.
It will reveal its full-year results next month.