Powers was playing defensive mid part of the 4-1-4-1 formation which was fine. He played the role well initially. This however, meant Butcher playing a slightly more advanced midfield role which didn't work so well. Naturally Butcher dropping back and Harkes playing the advanced role worked better. Another case of Neilson getting it wrong tbh. Butcher should've started in place of Powers with Harkes taking up Butchers initial role in midfield.