"It's not over, we can make it up, it's not insurmountable by any stretch of the imagination," ESPN quotes Platt as saying.
"But, equally, it's theirs to lose. It's very, very difficult for us to go on and win the next 15 games on the bounce. But I think we're capable of doing it.
"We just have to make sure that gap doesn't increase and that we're there, because we've no control over what happens at United. I thought we were a bit stop-start at the beginning of the season but at the beginning of December we started to play and be more consistent."
City won the Premier League last season.