Monarch Travel Group is being tipped as a potential suitor for Thomas Cook’s ski and sailing holiday arm Neilson.
The Cosmos parent company is believed to be facing competition from various private equity investors.
None of the parties involved would comment on the Sunday Times report, which suggested Cook could raised £150 million from disposals, although it is not clear how much Neilson is worth.
The newspaper disclosed in February that Cook chief executive Harriet Green would seek to offload Neilson as part of a series of sell-offs to help bolster the group’s balance sheet.
Gold Medal Travel is seen as another business that could be sold.
Cook is to release its interim management statement on Thursday (August 1).