It depends on how many skill points you have before the draft. Without knowing I cannot give the best advice.
@ Aleksandar, you realize you spend 640k per season on draftees who you can get for cheaper on the transfer list right? Or are really wanting that homegrown player? Please be careful to give such advice to people asking, because it's a very bad one financially speaking. It's understandable if you're training to make a home-grown team, but if that's not the goal of the person asking it's not proper advice. No offense intended.
40.000 per week, plus 14 weeks: 560.000
if u get a potencial 9 or 10, 18 years old this prize, let me know ;)