Well I am sure there are people who tried this. I have 2 inside guys that I have been training for a while and they will be 23 soon. Should I go on training them? I tried to sell 1 of them but transfer market sucks right now so nobody bids to the price I desire. Therefore, I want to keep both guys but I am suspicious if the training will be so slow for them. Any ideas about training speed that you can advise me what to do? Thanks.