After impressing during his loan spell, the midfield man is now focusing on his Millers future and is looking forward to the rest of the season.
Speaking to the Advertiser, he said: “I have been speaking to clubs for the last couple of months but I've enjoyed my time here and with the stadium and the lads and the quality in the team, I felt this was the right decision for me.
“When you're month to month, everything is a bit up in the air but from a personal and a family point of view I can get sorted because I know I'm at Rotherham for the next three years and hopefully I can have success here.
“I came here expecting to be challenging for promotion. We're third in the league and we've got every chance and now we need to finish strongly.”
He added: “Three points will consolidate third place for us but you can't take anything for granted tomorrow. Barnet are a good footballing team but when we play our game we are more than a match for any team in this division”