Ridehalgh relishes derby clash
The 21-year-old has had two loans spells with the Spireites, chalking up 20 games last term and a dozen more earlier this season before parent club Huddersfield Town sent him to join the Millers.
In fact, Ridehalgh came on as a sub for Chesterfield when the teams drew 1-1 at the Proact Stadium in August.
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Hide AdAnd having had involvement with both camps, he reckons each have what it takes to be in the final shake-up in April.
He told the Advertiser: "Chesterfield are similar to us in that they've got a good squad and I do think they will be up there come the end of the season.
"Their striker, Marc Richards, is very good, as is Mark Randall in the middle. He hasn't been playing regularly recently but I think he's a top player.
"When Chesterfield played Rotherham last time, I had only joined the day before and came on as a sub. It was a full house and I was just happy to get on the bench.
"Obviously, this time I'm looking forward to the match for personal reasons but as soon as you go out on the pitch all that goes out of your mind."