Clemson athletic spokesman Tim Bourret said Tuesday the school and Purnell have not signed the deal, but have a framework in place. Bourret says the extension will boost Purnell's salary to about $1.35 million.
A year ago, Purnell earned a two-year extension through 2014 that guaranteed him $1 million a year.
Purnell has led the Tigers to consecutive appearances in the NCAA Tournament after a 10-year absence.
He also led Clemson to the finals of the NIT three years ago and has brought in two nationally ranked recruiting classes in the past three years.
Purnell agrees to two-year extension
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