Swansea City have confirmed they have received clearance from Fifa over the signing of defender Fede Bessone from Leeds United.
But the Swans are till awaiting clearance for their other signings Rafik Halliche and Darnel Situ.
The trio of signings were made late on transfer deadline day but delays in processing the transfers has meant the Swans have had to wait for clearance.
Bessone will be available for Swansea's trip to Arsenal on Saturday.
The Swans agreed a four-month loan deal for Fulham centre-back Halliche, 25, and a £250,000 permanent deal for Situ, 19, from French club Lens on 31 August.
Defender Bessone, 27, was released from his Elland Road contract to return to the Liberty Stadium, signing a two-year deal after 12 months at Leeds.
But the Premier League newcomers are still anxiously waiting for clarification from the footballing authorities regarding the completion of Halliche and Situ's signings.
Swansea insist their required paperwork was submitted well before Wednesday's 2300 BST transfer deadline.
But such was the unprecedented volume of transfer activity throughout Europe on the final day of the summer transfer window, Fifa have a backlog of transfers to confirm.
The Premier League is also required to approve Swansea's new signings.
BBC Sport understands the league has written a letter of support for Swansea that the Football Association of Wales can use in evidence to Fifa that the Swans have adhered to Premier League transfer rules.
Swansea did suffer international clearance disappointment from Fifa when David Edgar's proposed move from Burnley collapsed in January.
Swans boss Brendan Rodgers wants Algeria centre-back Halliche and French teenager Situ, who signed a two-year deal, to be cleared as Swansea have little defensive cover.
Captain Garry Monk is still short of match fitness as the centre-back recovers from a foot problem while Alan Tate is out for six months after breaking his left leg.
Rodgers' only back-up to his first-choice backline are youngsters Daniel Alfei and Joe Walsh, both 19, although Walsh himself has a groin problem.
Algeria international Halliche has played just twice for Fulham since joining in August 2010.
Meanwhile, Swansea's home match with Stoke City has been put back 24 hours to Sunday, 2 October as Tony Pulis' men will be in Europa League action on the previous Thursday.