In the Champions League there are always games where you need your Goalkeeper to get you out of trouble, we saw it with Courtois last year, with Neuer at Bayern and also with Navas when Madrid won three in a row, has there ever been a big CL game where Ederson bailed us out ? I can't think of any and I believe that's one of the reasons why we haven't won it yet, sure his distribution has been the best out there but if our defence gets exposed we're screwed, and let's face it we are not going to stop Bayern from creating at least a few chances so either he makes some saves or we hope Bayern fluff their lines.