Let us try it different...
How much money would Real need to offer for a Manchester United player that...
... is homegrown player out of the region and plays for the club since he is 10 (and if you see e.g. class photos of that 6 year old Müller he was the only guy who wore his Bayern stuff in school, too)
... was the top scorer of the team in the recent 6 years (and in 4 single seasons of that) in all competitions despite not being the main striker and only 25 years old - top scorer not only in goals but in assists, too
... no scandals, no tatoos, very disciplined
... is an easy character that takes care of everybody in the dressing room, in the recent years grew more and more in a leading role on and off the pitch where he is the team speaker, too - whenever it gets critical
... is World Champion, won golden and silber boot and the silver ball in the two recent World Cups, was in the Ballon d'Or list 4 times in the last 5 seasons.
... is very consistent. Had more than 10 goals and more than 10 assists in 5 of the 6 last seasons no matter what position or how many injuries of others etc.
... is very intelligent and has a very strong mentality with which he can influence the other players, does not take himself too serious
... your team has the goal to grow e.g. in the Chinese market - you remark that this player gets Justin Bieber like receptions there es the Chinese seem to like especially the funny side of his character
... is the best entertainer for fans and the team and leads the celebrations after title wins
... is the absolute media love - when your coach does not want to go to media dates of the TV channels after the matches they ask instead for him to come and let him analyse the match...
... never has missed more than 1 club match in a row because of an injury or illness since he was 10
