Didnt want to chance it in the first season as you dont know what you will get, as others have stated they now appear to be slow trainers.
The more i think about this the more i think its a ploy from Nordeus....eventually i will but an older player and have to spend more rests to get them where i need them....or i will have to buy a younger player with less % and use rests to get him up to speed.....i think they are assuming eventually i will run out of rests and will have to buy them too.......!!