Probably asking a too much of him and don't think Pep will do it, but I think the move is to sacrifice one of Rodri/Fern for Delap and let Foden drop into central midfield.
We don't need 2 holding mids because Leicester are just going to try to spring Vardy with long balls, and as it is both Sterling and Foden are out of position and ineffective. Might as well let Sterling and Mahrez try to wreak havoc on the wings, KDB and Foden create some magic in midfield, and see if Delap can help with the link up and be a big target in the box.
Caveat: there is a reason I am not a manager.