Well the sign on fee for Rabiot, transfer fee for Juve, agent commission for Veronica + the requested salary probably is rather close to Casemiro total numbers, ManUtd definitely did choose the right one between two not so good options
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The difference between Casemiro and Rabiot is like the difference between Makelele and Ambrosini