Arsenal boss Wenger explains selling Nordtveit to Gladbach
Wenger rates the versatile Nordtveit highly but he believes the 20-year-old needs regular football to continue his progress.
"He was not even practising every day with the first team, so he needs to play," the manager told arsenal.com.
"He is a fantastic character, with great quality. He played last year because we gave him to Nurnberg [on loan], he came back and didn't play and he needs to play now. That's why we let him go.
"Yes [I had high hopes for him], but we have a number of centre backs and full backs so he didn't get the games. I thought in December that it was the right moment for him to go and play."
It's all kicking off again! Click here for the No1 coverage of Arsenal's winter market transfer news.