And the bitching continues
The same sky report of 20 + 10 says that the 10 million in bonuses are mostly appearance related and Matuidi would need to play in 80% of Juve matches per season for us to pay the entire 10.
If Matuidi is good enough that he plays 80% of our matches over the next few years, it's pretty damn obvious that paying 30 million for him is peanuts.