Hughes insists he is putting into practice lessons he has learnt from his past, particularly the aftermath of frantic transfer business at Queens Park Rangers.
He told The Sentinel: "It's good for the group if you bring in new faces, but you must get the balance right.
"Sometimes I've found to my detriment that if you make too many changes too quickly it can go against you, and I'm mindful of that.
"We know from the season we had last year that we've got a strong group, so we do not need to make wholesale changes.
"We are adding to the quality we already have and that's important. It's important that the type of player we bring in is correct, not only ability wise but character wise. The group is really strong, and I don't want to upset that dynamic."
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