Real Madrid´s annual turnover: approximately €350m.
Combined cost of Kaka and CR7 transfers: €155m
Value of CR7´s 6 year contract: €115m
Value of Kaka´s 6 year contract: €60m
So that´s 1 year of their annual turnover on two players.
Necessary increase in revenue to break even: €55m per year. (16% of current turnover)
How did it work out last time?