In my experience (I'm Norwegian myself and of course following Spurs transfer news more than i probably should) journalists from smaller countries are often a bit more clued in on transfers on their players than journalists in bigger countries are. Agents, clubs and players in the bigger nations are more used to the attention and used to having to keep things quiet. In smaller countries clubs, players and agents tend to get a bit closer. Whereas in England one journalist might have a connection or two where he sometimes gets information the people involved in football in smaller countries tend to be a bit closer as they're a smaller group of people and not under that constant pressure of having huge money deals going on.
Just my take on things, I don't know if you have the same impression from the Croatian media? Either way I hope your media is right