The 20-year-old, who has been at New York since mid-November, has been a hit with the Millers, looking dangerous in his 12 appearances on the left and scoring one goal.
Boss Steve Evans has been suitably impressed and has extended the deal for a further four weeks.
Meanwhile, Jack O'Connell has returned to Blackburn after his youth loan expired.
The 18-year-old England Under-19 international made five appearances for the Millers during his six-week stay in South Yorkshire but now returns to Ewood Park.
