The midfielder is so highly rated by the Spanish club that they have inserted a massive clause in his deal, while his official wage is considerably low
The blog have released the contracts and transfer agreements of some Europe's top players, including that of Gareth Bale, Radamel Falcao, Mesut Ozil and Anthony Martial, while they are currently under investigation from the Portuguese authorities over claims of blackmail.
And the website has struck again by revealing the deal which saw Real Madrid sign the Germany international from Bayern Munich for €25 million.
It is clear the Spanish club rate Kroos highly, as he has been a mainstay in the Madrid first-team, and the contract leak reveals just how tough it will be for any team to convince them to sell him, having inserted a €300 million release clause in his deal.
Kroos' wages, though, are rather complicated. His official wages stood at just €6,000 per month, but through various bonuses and clauses, he earned around €11,320,755 in his first term, and until 2020 he will make around €11m per season.