Christine wants to rejoin the band according to The Guardian

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As for Fleetwood Mac’s future recording plans, McVie lets slip that she has recently written new songs for the band.
‘I sent them to Lindsey and he loved them,’ she reveals. ‘You could hear his mind whirring, figuring how he could improve them, Mac them up.’
Then out of the blue, in that honeyed voice, she starts to sing.
‘We’ve only just begun…’