3) Arjen Robben (Bayern Munich)
Recently linked with a £73m move to United, Bayern Munich winger Arjen Robben has an astronomical asking price considering his age.
4) Harry Kane (Tottenham)
One good season in the Premier League and Tottenham striker Harry Kane is already said to be worth £45m as Manchester United show an interest, though in fairness that’s less than Martial would cost and he’s achieved considerably more.