He is walking on eggs. Does not want to ruin a possible Fleetwood Mac album. Wants to finish work on that. Probably is busy with it. And maybe work on a stash of songs for outside of the big machine. And waits for the spark from Stevie to work on that too, so they can concoct a 'last chapter of Fleetwood Mac' before the FM-tour starts in the second half of 2017. My wild guess ofcourse.