This is a great deal for both the Nets and Lin. Lin's career took off when the Knicks gave him a chance to play and he absolutely flourished. Due to his success on the court and what he did for the Knicks in 2012, he was followed closely globally and Linsanity begun. That year in 2012 Lin averaged 14.6 points, 6.2 assists, 3.1 rebounds and 1.6 steals.
Last year in Charlotte, Lin averaged 11.7 points, 3 assists, and 3.2 rebounds in 26.3 minutes off the bench, playing behind Kemba Walker.
Clearly Lin will take over as the primary ball handler in Brooklyn as the team let go Jarrett Jack who missed most of last season due to injury. He should have plenty of value next year in fantasy playing with a big man like Brook Lopez.