3. Raphaël Varane
The French World Cup winner has blown hot and cold during his time at Manchester United but his experience has helped United tide over some tough times in the last few seasons, leading to a Carabao Cup title last season. His contract is up in the summer with an option to extend for another 12 months. But with the new owners looking to change the sporting landscape, Varane's £340,000-a-week contract could be a challenge they'd like to avoid.
A five-time Champions League winner, Varane possesses the ability to play out from the back, and despite a marked drop in pace, remains a steady option in defence. The 30-year-old's success and longevity could spark interest from clubs across Europe looking to add an experienced option in their backline.