it takes about half a season to train a new position to Accomplished, you don't have to play them in that position during matches either.
I retrained Phil Neville as a Center Back, it took 4 months
Basically I've re-trained Critiano Ronaldo to play as a striker, it only took a month but all his stats have dropped (probably down to 10% of his workload going on learning a new postion), so was wondering now that he's learnt it, can I stop him from learning the new position (that way he will go back onto full training and his stats will increase again) and keep playing him as a striker without him reverting back to a winger???
Yeah, i trained Ribery from Left Winger to a Right Winger now it is his Natural position XD