"During the course of his rehab, Jeremy re-aggravated his strained left hamstring and will be out approximately three to five weeks as he continues to work towards a full recovery," Nets general manager Sean Marks said in a statement. "We understand and appreciate Jeremy's competitive desire to get back on the court with his teammates, however, we are going to be cautious with his rehab in order to ensure that he is at full strength once he returns."
Lin, 28, was first injured Nov. 2, just five games into the season. He missed 17 games and returned on Dec. 12 but then strained the hamstring again on Dec. 26.
Lin, who signed a three-year, $38.3 million deal in July, has played in just 12 of Brooklyn's 43 games, averaging 13.9 points, 5.8 assists and 3.3 rebounds in only 25 minutes per contest.
The Nets are just 9-34, the worst record in the NBA this season.