The Bluebirds have managed just one goal in their last five outings in all competitions and pressure is building on their only fit forwards, Michael Chopra and Jay Bothroyd, to find the net.
Jones admits he would like to bring in attacking reinforcements and create competition for places but says it is highly unlikely he will be able to do so for the time being at least.
"There's no chance of anyone coming in at the moment," he told the South Wales Echo. "I will sit down with the chairman and see where we stand because we do need two players to come in. Up front at the moment is the only department that we can't switch around.
"If players get complacent it's very difficult if you've got no-one to replace them with. I want competition all the way through the club. It can breed complacency if they are not put under pressure. The longer that goes on complacency can come in."