His case is due to be held 'in the summer' so, unless I'm not up-to-date on what's been happening, it's quite possible this situation comes about in which case he could manage the Wales team for the play-off final whenever that might be and subsequently for the world cup tournament after that.

I guess the Welsh FA would not take him back if found guilty but are they obliged to re-engage him as team coach if, as I say, he's not guilty or the case is dropped?

I assume the Welsh FA have their ducks in a row whatever might be the case.