United States international Timothy Weah tore his hamstring again in action for Lille on Sunday as he made his return from a six-month lay-off.
Former Paris-Saint Germain striker Weah suffered the same injury in August, just weeks after signing a five-year deal at Lille.
The 19-year-old - son of former Ballon d'Or winner George Weah - made only his third appearance for Lille as an 80th-minute substitute against Marseille in Ligue 1.
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Although Weah played out the remainder of the 2-1 defeat, he confirmed on Instagram on Monday he had suffered a setback.