The band, who played a Royal Albert Hall show in London last month, did so without their original singer Stewart, with a number of guests taking on vocal duties.
Keyboardist Ian McLagan has now said he will join the other surviving members – guitarist Ronnie Wood and drummer Kenney Jones – for a jaunt without Stewart.
“If we don’t do it very soon, one of us is gonna check out,” he said. “I’m 64, for Christ’s sake! We’ve been waiting and waiting for Rod to say yes; now he’s finally said no. He’s busy doing other shit. So we’re going to do it.”
His comments come despite Stewart giving his strongest indication yet that he would return to his old band just last month.
“The world’s our oyster here,” McLagan told Billboard. “It will still be Ronnie, Kenney and me. We’re just steaming right ahead.”