(Surprisingly?) Little speculation the other way around.

What will Toyota do if Evans goes to MSport and Ogier retires....With all respect to Katsuta, at the moment if he is even number 3 car, Toyota will never win manu champ vs Neuville, Tanak and Solberg/Sordo/Breen.

Evans is a perfect example of how a ("2nd best") driver that was widely dismissed for multiple rally wins or even title chase can change when he gets into a great car. This goes both ways though, say Breen or Suninen might do great in a Toyota and Evans might "suddenly" do much worse back at MSport.