I've posted on here - a while back - that I wonder if coaches are like players in terms of being the right fit for the right position.
Like how RTS is a better Fullback than Centre, Webby and co might be able to get the team to be regular finalists by doing the "boring" stuff - ie training, setting pathways etc - but maybe lacks the mental skills/motivational skills to get just that little bit extra. So while you never kick anyone like that out of your club, you might gently point out that maybe they're best now being assitant to Ivan/whoever can pull the showstopper trick of a GF Win.