Carroll is due to report back to North End's training ground at Springfields today with the rest of the squad to prepare for Saturday's trip to Sheffield United.
Carroll was not due to rejoin his team-mates until Thursday, but will now have more time to try and redeem himself and force his way back into the squad for Bramall Lane.
The 6ft 3in striker was not even in the 16 at Ipswich nine days ago after returning from a three-match suspension after a red card at Scunthorpe.
He has not hit the heights at Deepdale and Preston are desperate to break away from the relegation zone.
Simpson has told the highly-rated youngster he must fight to get his place back after being overtaken in the pecking order in his absence.
The fact that he was not involved at Portman Road suggested he had slipped from first choice before his sending off to fifth in line - Paul Gallagher, Karl Hawley, Patrick Agyemang and Neil Mellor were all selected in front of him.
And, with Brett Ormerod also pushing for a recall, the battle to recapture a starting place looks like being a tough one.