Well if they said it, then it must be true.
I know what Djokovic family said about that topic on more than one occasion. Anyway nobody here took any part of the negotiations so we don't know what
really happened. What we know is that somebody declined somebody's offer seeing what transpired after the negotiations. And since Britain had the more established tennis infrastructure and money compared to Serbia, my bet is that Djokovic family turned the offer down and decided to go on their own and roll the dice. Also that happened years ago so what is the reason of bringing the subject again, I have no idea. Parents are supposed to seek the best possible circumstances for their children, aren't they?
Chis Bowers never talked with any members of Djokovic family about that book (which I read) so his opinions are just that, his opinions.
As for Bedene, the guy played as well as he could, I think, in today's match, and he obviously benefitted from joining GB team. Today's result is misleading, imo, as some of the games were close and he did push Nole to play some of his best tennis so far in the tournament. To scold a grown man for choosing where he wants to work and live it's just silly, especially the reasons given by Mastoor.