West Bromwich Albion youngster Rakeem Harper has only made one substitute in the Championship so far this season.
Harper has played just six minutes for West Brom in the Championship this term, with the youngster struggling for game time.
But Bilic has suggested that the 19-year-old has caught his eye in West Brom training.
“Rekeem Harper is training unbelievably well,” Bilic said. “At the beginning I wasn’t happy with him, I told him that. After Millwall in the cup, I had a chat with him.
“Since then, the numbers are saying – we like to get those numbers – that he’s training like crazy. He’s excellent in training, but at the moment it’s very difficult.
“His reaction was great and positive.”
Bilic is a big fan of Harper, who he managed to persuade to sign a new contract at the Hawthorns in the summer.
There were fears that Harper could leave West Brom on a free transfer in the summer, but Bilic insisted that he was kept around.
The midfielder is regarded as one of the Baggies’ brightest prospects, but he faces fierce competition to earn a place in Bilic’s starting line-up.
West Brom have started the season fairly strongly, with Bilic unlikely to be wanting to make big changes after the international break.
The Baggies are next in action on Saturday, when they take on Fulham at Craven Cottage.
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