Aneke's current loan was due to run out in January and Davis was pleased to extend it last week until the of the season.
The manager said: "Chuks hasn't shown us his best form this season and he is the first one to say that.
"He will improve. He's still young, just 20, and he's got a long career ahead of him. For the next six months he will be with us and that's certainly good news."
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