i want to make the first interpretation:
he has played for our team,for 10 years.he made a lot of good things for our team.however,he had made some mistakes but tried to fix it.in last two years,he has took the responsibility and i think he fixed.
we have gained 8.7million € for his sale and i think it is a great money.he will gain much.so.there is one think to say:thank you,i will not forget you,bon vojage!