As said, Juve has 3 strikers who are comfortably better then ours. They got rid of the fourth cause he wasn't getting any games. So there's no urgency in buying strikers. Also we're talking about a club who can make 6-7 signings in summer without breaking sweat. If they feel they need a striker then they will get it. So there's no urgency or risk of starting the season with clear flaws in their first squad. On a side note Juventus produce alot of great youths and has a great relationship with both Atalanta and Parma who produce top players themselves. Just because they aren't desperate enough to need to throw 17 year olds at the deep end that doesn't mean that they don't have kids of their own.
Regarding your second comment. I repeat I can understand a player who is reluctant to join a side whose got 3 strikers that are clearly better then him and had just shedded a striker because he wasn't getting any games. The fact that they never bothered buying a player from his country also suggest that they don't rate that league and its players very much either. Our situation is way different.
Also according to
@Acrobat7 there's nothing on German papers that there's a minimum clause or 'ridiculous' demands coming into play which is fair enough considering that Dortmund aren't exactly a poorly run club. Surely the deal they made is worth their while. I guess some club is covering its arse after yet another humiliating NO.