Blackburn chairman John Williams believes there will be no new arrivals at Ewood Park before January.
Rovers fans have called for some fresh faces after a disappointing start to the season, which has included a 4-1 loss at West Ham and a 4-0 home defeat by Arsenal on Saturday.
Manager Paul Ince has given trials to French defender Phillipe Christanval, Dutch winger Kiran Bechan and Spanish midfielder Jordi Lopez, who as free agents can sign outside the transfer window.
But Williams is wary of making any panic signings and is confident there are already plenty of options within the Rovers squad.
"The bottom line is we are not short on numbers in the squad and I think it is highly unlikely anyone will be coming in between now and the re-opening of the window," he told the Lancashire Evening Telegraph.
"We are not planning to bring anyone in at the moment but, of course, that could change if someone was presented to us that would really improve the team.
"We are only four games in so there is no need to panic. The goals conceded are horrible but we will improve."
Ugur Yildirim has also been taken on trial from Turkish side Sivasspor and Rovers could snap up the Dutch winger in January.
And after seeing previous boss Mark Hughes have great success in the transfer market, Williams feels Ince's policy could pay dividends too.
"Sometimes trialists do pay off, sometimes they don't. It is always better to sample before you buy," he added.
"If you look at our purchases, though, they have not come through trials yet. So perhaps that suggests that having players on trial does not result in signings.
"Having said that, we had a very serious debate about Anthony Annan after he was on trial, so I still believe the process is worthwhile.
"Providing you are not disrupting training, then why not bring in players who are available for a good four or five days of training?
"It is becoming harder and harder, when you think about the pool of players available.
"You are becoming less and less likely between windows to find players good enough."