Manager Mick McCarthy changed all ten outfield players for the trip to Old Trafford a week ago, with his main focus on the visit of Burnley at the weekend, which ended in a 2-0 Wolves victory.
- Wolves home
- Wolves fixtures
Moxey told the club's official website: "In the letter we contest any accusation that we didn't field a full-strength team at Old Trafford.
"We have also expressed surprise at why we're being asked for an explanation given there are examples of other teams doing exactly the same.
"We're confident of our position on this and have cited the example of three or four other teams doing something similar.
"If we had fielded five youngsters then I could understand the risk if us being in bother.
"But I think, with the exception of George Friend, it was the same 20-man squad that travelled to Tottenham."