Signing a new left back, selling “the best left back in the league” then clearly
I'd assume so. It would be a strange one in their financial situation and with nothing really left to play for this season to sign a £20m left back when it's one of the few parts of their squad that isn't a mess (Digne with Godfrey as cover). I can't imagine there being a big queue to sign Digne unless it's at a cut price deal.
Rafa has the self confidence to break plenty of eggs in the process of making an omelette, to use a Mourinho-ism. It would be classic Everton though to let Rafa smash eggs all over the place and then fire him.