what is happening to your player is something that happens to every player in real life.if u want to have 20 at all the stats than you will have to put his trainig schedule at intensive to all areas, but this is imposible because he will get injured very often due to the high workload.so your player is cought in the middle...you need high training in every area but you risk injury.this might be one explenation.the other one, and most likely, the game is probably set to lower his stats since no one was,is and never will be the best at every thing(not even pele or maradona:yes).this makes sense because, if u noticed, the stats dorp from 20 to 15.usually a players stats dorp down(injury, advancing age) one at a time(from 20 he goes to 19 and than 18 an 17 and so on).the abrupt drop in stats its probably because the game is set this way.
unfotunetly there is nothin you can do about it except modifying the stats very often...
unfotunetly there is nothin you can do about it except modifying the stats very often...

