The 19-year-old defender has been rewarded for his outstanding performances whilst on loan at Cheltenham Town in a month that saw the Robins record four wins and a draw in five League Two matches.
He has been recognised as the stand out youngster in all three Football League divisions.
Reflecting on winning the award, Greaves said: “I’m delighted to achieve the award. I think it’s recognition for the performances I’ve put in, in September, and also the teams performances as well.
“We’ve gone through September unbeaten keeping a few clean sheet a long the way so I’m delighted to get the award.
“I’ve come here and I think I’ve impressed people and that’s what I was aiming to do.
“I’m delighted to get the award at such a young age in big competition as well – it’s a great award to get.”
Cheltenham boss Michael Duff added: “It’s a real feather in his cap. I think it’s a reflection on how well he’s done, how well his teammates have done, the club are doing and it is good that somebody in the team is getting recognised. It means we’re doing something right.
“For him he’s hit the ground running. I think he has had 12 or 13 games on the spin now and he’s not looked out of place. The fact that he is keeping Will Boyle out of the team at the minute probably speaks volumes.”
Photo: © Cheltenham Town