The Japan midfielder was superb in their FA Cup win against Millwall.
"As much as I'm a manager, I'm a football fan as well. I want to see exciting players out there that entertain and when he gets the ball you actually think something exciting might happen because he's prepared to take a full-back on. He looks to get shots away and get crosses in.
"In football terms he's only a baby but I don't care what age they are, if they're good enough I'll play them and he's certainly shown he's up for the challenge of playing for Bolton Wanderers," said Coyle.