Ill pick Nic Arsene: Bendtner will come back to Gunners
Wenger sent Bendtner, 24, on a season-long loan to Juventus on deadline day.
Since then, Juve officials have ordered the Dane to slim down after claiming he was too fat.
Bendtner spent last season at Sunderland and his Gunners days looked over after this latest deal.
But Wenger said: It is not for nothing that I loaned him to Juventus. He is a talented player.
There he will grow and then return to my team.
I am convinced that at a team like Juventus, in a very difficult league, especially for strikers, he can make the final leap in quality.
Dont forget, he is a boy of 24, the right age to prove who he is.
The talent is not missing otherwise I would not have bought him from Copenhagen when he was just 16.
Wenger added: We believe in him and that is why we only gave him to Juventus on loan.
We have not sold him, only loaned him, and next year we will bring him home.
I think he can resolve his problems with us and prove himself.
Meanwhile, midfield star Abou Diaby is desperate to make up for lost time after his year from hell.
The Frenchman, who was crocked for much of last season, said: I had some very difficult moments, some days when I was depressed when it was tough, but even then, I always kept faith.
I always told myself that some people were in a worse position than me.
I am 26 and I am aware that I am at a key moment in my career, that is why it was so important that I came back this season.
Now, I am careful about every detail, I leave nothing to chance. I am much more mature.
"I also had a full pre-season for the first time in ages.