Sherwood was at Villa Park for the 2-1 win.
"He came in and made a couple of points to the lads, a couple of bits and pieces for everyone. I thought the boys delivered that in the second half and were very good," Marshall said.
"He was there and there was good information to the group, there's a football knowledge there which comes with a lifetime in the game.
"He was in the dressing room before the game briefly, not a huge amount, but he introduced himself and wished the boys the best."
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