Green Day part ways with manager Pat Magnarella after 21 years

Green Day

has parted ways with its manager of 21 years,

Pat Magnarella

, who has represented the rock band since 1996.

A source said, the trio of Billie Joe Armstrong,

Mike Dirnt

, and

Tre Cool

, is set to sign a deal with

Jonathan Daniel

who manages artistes such as Sia, Fall Out Boy, and Lorde, among others. Magnarella had no comment.

Green Day started working with Magnarella two years after releasing the breakthrough, multi-platinum album, 'Dookie'. He served as a producer on several Green Day projects, including the cast album for 'American Idiot'. Magnarella also ran Armstrong's independent label Adeline Records.