He cost £60m on a 6 year deal
Amortisation is £10m per year
Hes therefore currently worth £50m and so selling for £30m would create an ffp loss of £20m
His wages are probably £150k per week so thats £8m per year
So keeping him for a year and amortising his fee another £10m would cost less than selling him for £30m
Conclusion: its bollocks and someone is paid to make it up and write it