Channing joined the band in 1998 but left by mutual agreement in 1990, just over a year before they shot to global superstardom with their 1991 album Nevermind.
He is adamant he still considers himself an honourary member of the group and now he has spoken out about his hopes for a reunion.
Channing tells NME magazine, "It'd maybe be something like Dave playing guitar and singing and Krist doing bass. That'd be about the only arrangement I could think of that we could pull off."
In July last year (13), Grohl and Novoselic performed together in Seattle, Washington with Sir Paul MCCartney - it was only the second time they have shared a stage in their hometown since Nirvana's frontman Kurt Cobain died in 1994.