Hughton has brought in six new players to Carrow Road since last season, including Dutch striker Ricky van Wolfswinkel for £8million.
But he is looking to land one more late signing to give the club's Barclays Premier League campaign a boost.
Hughton admitted he has made enquiries about Australian James Troisi, a 25-year-old attacking midfielder he worked with at Newcastle and who currently plays for Atalanta in Italy's Serie A.
"He is one of numerous phone calls and enquiries we have made," Hughton said. "It's normal at this time of the window.
"I knew him at Newcastle. He'd been there for four years before I got there. I'd like to think anybody we would enquire about would have sufficient qualities but he is only one of a few."
Hughton expects a frantic end to the transfer window as clubs scramble to do last-minute business.
"We are trying as hard as everyone else," he said. "Something can be done on the last day in the last minutes. Some clubs haven't done much business and I am sure they will do so over the next three days. It's a very hectic time. Sometimes you spend more time on the phone making enquiries than you want to.
"If we don't (sign anyone) then we are happy with the squad we've got but we are looking anywhere we can improve the squad. Sometimes a name will be thrown in late in the proceedings and it might be one you want to take a chance on. You have to be very open but it has to suit us."
Norwich, who face Southampton on Saturday, have just one point from their first two league matches, having drawn with Everton and lost last weekend at Hull.
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- Barclays Premier League