The 23-year old, who scored a second-half equaliser for Australia in their 2-1 friendly win over New Zealand in Melbourne last night, said his move to Duisburg helped him develop his game further and gave him a solid base ahead of the Socceroos' World Cup camp.
"There were a few little problems at the club just off-field and budget-wise but then everything got sorted and I played and I got the opportunity to play as a right-back which I did enjoy," he said. "I could get up and get forward as well and I got to work on my defensive game which is very important at international level. Defensively it has to start from the striker so I learnt a lot there.
"I'm pretty sure I'll be heading back to Nuremberg. When I left on loan they said to me there's no chance I can have an option to be bought and I will come back after six months so that was very positive."
Vidosic put his best foot forward by scoring on the big stage last night but added that he did not think his position in Pim Verbeek's final 23 for the World Cup was secure just yet.
"Every time you put on the green and gold, especially playing at home, I'm one of those players that I like to get on the ball and try and beat a few players," he added. "It's more just the coaching staff who I want to impress. That's who everyone wants to impress. It's no point if the fans think I played great and the coach thinks I didn't, so in the end, everybody wants to impress Pim. He's the one who knows most about football and over the last since I have been with the national team, he and the coaching staff have helped me heaps and heaps so it's been unbelievable."
And the former Brisbane Roar man said the side's performance would pick up as they spent more time together in the lead-up to the world's biggest sporting event.
"Everyone has come from their own clubs, having their own tactics there, so now we have a bit of time (to improve). Everyone will learn little things about everyone and it's getting better and better every day in training," he added.