Hmmm,
Maradona, bigest transfer fee at that time
Ronaldo, bigest transfer fee of that time
C.Ronaldo, bigest transfer fee of his time
And in this world where Kolarov and Bale are 20 mil euros, where Di Maria is 25 milions we can't sell our brightest talent for 30 milions, we just can't. If we can get 30 milions for him now, even he hand't played one single season like regular starter imagine how much we can get for him after 2-3 seasons on highest level.
Rooney to Man Utd for 33 milion euros with 18 years from Everton, we aren't Everton my friend.