Summer recruitment has seen six players arrive and three go out for a net loss of just £1m - but Hughes doubts there will be any further arrivals.
"We are in a position where we are quite happy with what we've got," the Welshman said. "We can't guarantee we can have a transfer window like this every time but the chairman understands that.
"We're trying to make the club better and get good players here, which I think we are doing.
"We wanted to spend the money but it has to be the right deal. If there are other opportunities we will pursue them."
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