Xiaomi is believed to be one of the potential buyers for Huawei's sub-brand Honor if such a deal is being planned. Other companies connected with the alleged sell-off include Digital China and TCL. Huawei has denied the rumor in the past but such a sale could be good for both Honor and its founder in terms of sustainability and growth.
https://www.notebookcheck.net/Xiaomi-mentioned-as-one-of-the-potential-buyers-for-Honor-as-Huawei-allegedly-eyes-up-25-billion-yuan-US-3-73-billion-deal.498330.0.html
Can't imagine Xiaomi making such a move, though the other two I can't rule out.