According to Al Iannazzone of Newsday, the Knicks have agreed to sign Plumlee to a multi-year deal with a fully guaranteed first season.
Hearing Knicks will sign center Marshall Plumlee to multi-Year deal with full guarantee for year 1. Plumlee is on their summer league team.
— Al Iannazzone (@Al_Iannazzone) July 7, 2016
Per Michael Scotto of Sheridan Hoops, it will be a three-year deal.
New York Knicks and Marshall Plumlee have agreed to a 3-year deal, per league source. The deal is fully guaranteed for Year One, I'm told.