Despite leading title challengers Tottenham for the first half, the Swans were defeated 2 - 1 at White Hart Lane.
Alberto Paloschi scored his first premier league goal for the Swans in the 18th minute, but Spurs continued to pile on the pressure, securing two goals in the second half and taking home those vital three points.
Swansea could receive American investment as early as next month, club director Huw Cooze has revealed.
The Barclays Premier League club have been in talks with American businessmen John Jay Moores and Charles Noell since last autumn with the former owners of Major League baseball team the San Diego Padres set to make a significant cash injection in return for a 30 per cent stake in Swansea.
Both Swansea and the Supporters' Trust - who own 21 per cent of the club - have done due diligence on the American pair and negotiations have now entered a critical period.
"Talks are on-going and there's nothing on the table yet, no offer," said Cooze, the Supporters' Trust representative on the Swansea board. "But I would imagine they would make that offer and be coming in here in the next month or so.
"If they do we'll have to cross that bridge then, but the Americans and our own shareholders know the Supporters' Trust shares are not for sale.
"They never will be and they appreciate that, and we will work with them if it (the deal) happens."
Both Cardiff and Swansea return to Premier League action tonight, with both clubs looking for points to lift them away from relegation trouble.
Cardiff travel to Old Trafford in a game which could see new signing Jo Inge Berget make his debut.
Meanwhile Swansea face Fulham at the Liberty Stadium looking to turn around their disappointing league form, which has seen them take only one victory in their last ten games.
Striker David N'gog is available for Martin Laudrup's men following his transfer from Bolton.
Swansea City will look to take their European form into the Premier League this afternoon when they travel to Southampton (kick off 1330). The Swans have won two matches from two in Europe this season - including Thursday's one nil victory over St Gallen - but their league form has been more patchy.
The Swans have won two and drawn one of their six league games so far, and sit 14th in the table. Saints have enjoyed a bright start, and are 7th going into the game. For Swansea, captain Ashley Williams is set to miss out with an ankle ligament problem, but Angel Rangel could return from injury.
Swansea City face Birmingham at St Andrews in the third round of the Capital One Cup tonight.
It' will be the Swans' third game in the space of a week due to their Europa League commitments.
Michael Laudrup's men remain unbeaten this month with three away victories, including a 3-0 win away to Valencia in the Europa League.
Swansea will find out who they will face in the group stages of the Europa League later. It follows their successful transition into the next part of the competition after losing to Petrolul Ploiesti 2-1. An aggregate score of 3-6 meant the Swans had done enough to go through.
Swans boss Michael Laudrup says he's proud of his 22 year old son, Andreas, who's joining French side St Etienne on loan. He says its a great moment for the family.
Chelsea Boss, Roberto Di Matteo speaking after his club drew one all with Swansea City at the weekend