The Adelaide-native was dropped and criticised for poor application in training last month, but was back for Saturday's 2-2 draw at Coventry City.
Davis said: "Brad's got the bit between his teeth again. He's realised the errors he's made and shown a real positive attitude since then.
"He got some minutes on the pitch, deservedly so for the efforts he showed in training during the week, and he looked a menace.
"He ran at the full-back, which was good and he was very positive in his play. He cut inside and had a shot blocked and he had a chance at the end which he was inches away from poking in the net.
"A player like Brad, who's got so much talent and so much to offer with the right attitude, is a real asset for us and hopefully now he can push on."
Inman turned down a new offer from Newcastle United to sign for Crewe in the summer.
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