With Cricket Australia threatening to not pay players when current contracts expire on June 30, the ACA has set up a support fund for domestic and female cricketers who may be facing financial hardship.
It follows the governing body's refusal on Wednesday to enter mediation with the ACA.
"We are genuinely committed to getting a deal done before June 30 ... [but] it looks as though this impasse may continue for some time yet," ACA player liaison manager Simon Katich said.
"Whatever can be done to ease some of the pressure on the players is welcome."
All contracts for female and international male cricketers expire on June 30, as do those of half of the domestic male players.
Lehmann said he would address the matter once the entire squad for the Champions Trophy had got together.
"You have to do that. You have to keep it open and communication so we know what direction everyone's going," he said.
"There's no panic, it's just about the two parties getting together."
He said he had been in constant contact with skipper Steve Smith, who will be one of the last players to join the Champions Trophy squad after he guided Rising Pune Supergiant to the Indian Premier League final on Monday.