Evans has extended his loan to the end of the season.
"I spoke to George a while a go about extending his loan, before the suspension and illness which meant he was out of the team for a couple of weeks and that set him back," Davis told The Sentinel.
"He's got a great attitude and I can't fault anything he's done since he's been here.
"He's a young lad who absolutely thrives on playing football. He's eager to impress and wants the most of the opportunity to show he's going to be a good player."