Middlesbrough boss Tony Mowbray insists he will only enter the loan market if an "exceptional player" becomes available.
Boro have lost their last four Championship games and have slipped six points adrift of Leicester, who occupy the final automatic promotion place.
Mowbray, though, will only make a loan signing if it significantly added to the strength of his squad.
He told the club's official website: "If there was a player we thought would make a difference and we could afford, we would be in the market.
"We have got enough footballers - if anything, we have got too many.
"It's no good adding another one unless he's an exceptional player who can make a difference, and generally teams are not in the business of giving exceptional players away."
The Teessiders host Barnsley on Saturday desperate to halt their recent slide.
Mowbray said: "Sometimes defeats concentrate the mind and training has been very focused and professional.
"We have been trying to get back to basics and some real hard work. I spend a lot of time looking at what we are doing and how we are training, and we have changed a few things.
"We are always looking for reasons, but it's difficult to put your finger on it.
"We have to get back to winning ways. There's not a lot wrong apart from that confidence is not where it would be if we had won the last four games."
