Fettis in goal is the absolute certainty can't imagine anyone being worse than he was. In 99-2000 I made a ton of excuses for the players due to childish naivety. Never did that for Fettis in 1998 as he was unspeakably bad even the biggest happy clappers couldn't have defended him. He was absolutely useless. Last I heard he was a coach at United's Academy.
Of course with "all time" XI what we usually mean is "our lifetime XI" with exceptions like Bob Crompton. Of course there's several old enough to have watched Clayton/Douglas still around.