He has made just seven club appearances in all competitions so far this season.
"Bendtner scored two great goals for us in the game against Italy, but there were also things he lacked in the match and this only comes through playing games", Olsen told reporters.
"It is for this reason that he should find something new this winter, and so, we know that well. I think he will make the recommendation to himself and that is the main thing. Footballers want to play football.
"He has maybe 10 years left to go; he must use them well."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball