The 21-year-old, who is Rotherham’s record signing, has struggled to establish himself at the Championship club following his arrival 12 months ago and his days in South Yorkshire appeared to be numbered after he was left out of Evans’ first three matchday squads of the season.
The Millers boss also sanctioned a loan move for Clarke-Harris, who rejected the chance to go to League One Colchester and opted to stay put instead.
The youngster got his reward on Tuesday as he came off the bench in the 0-0 draw with Preston and made an impact, providing his lacklustre team-mates with a shot in the arm.
Evans was delighted in the turnaround in Clarke-Harris which was sparked by an improvement in training.
“Jonson Clarke-Harris did great when he came on but he’s looked great in training for the last three days, it’s amazing isn’t it,” Evans said. “Last week he didn’t look a footballer.
“I said to him before the game that I was going to put him back on the bench because his performances deserved it and then he did well when we came on.
“He knew that Danny Ward was struggling, so Jono came for his daily chat and looked me in the eye and said he wants an opportunity.
“I didn’t lie to him I said to him that his training performances in the last four or five days have not only been noticed by me but noticed by the staff and therefore he would be on the bench.
“Possibly, with the benefit of hindsight, I might have put him on earlier, but when I did put him on he made a real impact and that’s all you can ask for with your substitutes.
“If he’d scored it would have been ever better but he made a good impact.”