As I know, the question will be, how a 34 y.o. gets 153%:
-) I pushed him at the beginning of every season (started at season 8) to the age of 29 ~100 green packs
-) At 30 y.o. he keeps his Q only because of the high amount of MoM-titles. At his last season he started at 131%, 36 MoM-titles (=144% skills) + normal training and he finally reaches 153%.
-) I he didn't perform, I subed him... so, I did nothing special, that he gets the MoM-titles (no manipulation)
--> he has a rating of 9,1 on his whole career.