Striker Eder has undergone a medical at Swansea as his transfer from Sporting Braga nears completion, Sky sources say.
Liverpool have completed the signing of England defender Nathaniel Clyne from Southampton in a deal potentially worth £12.5m.
The Quakers, who were relegated from the Blue Square Bet Premier this season, had been facing the possibility of liquidation after the club's administrator Harvey Madden set a deadline of midday on Thursday for the bidding company to complete its takeover.
But at a press conference held at the Darlington Arena on Thursday, DFC 1883 Limited were announced as the new owners, meaning they will take over the running of the club while its debts remain with Darlington 2009 Limited.
With no company voluntary agreement in place, Darlington will not be able to take their place in the Blue Square Bet North next season and the Evo-Stik Northern Premier appears a more likely destination. They may also face sanctions from the Football Association.
"We'll face further relegation, but until the FA give us their wisdom we won't actually know whether it will be to the Evo-Stik Premier or Evo-Stik First Division," DFC 1883 chairman Dennis Pinnegar said.
"We have to apply for a football playing licence, the FA's ability to award that licence is coloured by our behaviour. I would like to say that our behaviour has been impeccable, they will not find any flaws in anything that 1883 have done to bring about the situation that we now have, we're crystal clear on that."
In January the club was placed into administration for the third time in nine years and the subsequent 10-point deduction pitched them into an ultimately fruitless battle against the drop.
The incoming owners, who confirmed Darlington would be part-time next season, will need to raise £200,000 by the end of June to secure the club's future.
A move away from their 25,000-capacity all-seater stadium is also on the cards, with the £270,000 annual cost of staying there proving prohibitive.