New Hull recruit Michael Crocker is one of a number of players bound for Super League whose arrival is being held up by visa problems.
The Australian international second rower was expected in England before the new year but is still in Australia waiting for his visa.
He was due to start training last Friday and is now hoping to get the paperwork through in time to join the Airlie Birds for their pre-season training camp in Portugal which starts on Thursday.
Crocker, 28, and his agent are working with the British Embassy in a bid to end the hold-up.
Crocker is not the only high-profile overseas player to be affected by a new system of visa-applications adopted by the Home Office last April.
The arrival of St Helens' signing from Penrith Panthers, Tony Puletua, has also been delayed but he is due to land in time to join his new team-mates on their pre-season camp in Portugal later this week.
Canberra Raiders stand-off Todd Carney, on the other hand, may be struggling to arrive in time for Huddersfield's opening game next month as he waits for his work permit.
The 22-year-old was sacked by his Australian club last year after a series of off-the-field incidents.
Huddersfield coach Nathan Brown said: "There are a fair few players stuck in Australia, and Toddy Carney is one of them. It's just sit and wait, but I'm confident he'll get here eventually."
The Giants are also waiting for the return of former New Zealand Test centre Jamahl Lolesi, who is trying to renew his visa.
New Zealand international Greg Eastwood, a member of the Kiwis' World Cup-winning team in November, had intended to join up with Leeds before Christmas but is still in Brisbane waiting for the paperwork to be processed.

Maguire believes he has strong squad
England 16-46 Australia - Highlights
England 16-46 Australia - Smith
England 16-46 Australia - Lockyer, Thurston and Burgess
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Smith preparing for success
England 20-12 New Zealand - Highlights
England 20-12 New Zealand - Players
| Time | Fixture |
|---|---|
| Engage Super League | |
| Friday 29th January | |
| 20:00 | Crusaders vs Leeds |
| Saturday 30th January | |
| 15:00 | Harlequins RL vs Wakefield |
| Friday 5th February | |
| 20:00 | Leeds vs Castleford |
| 20:00 | Wigan vs Crusaders |
| 20:00 | Huddersfield vs Bradford |
| Saturday 6th February | |
| 18:00 | St Helens vs Hull |
| Sunday 7th February | |
| 15:00 | Warrington vs Harlequins RL |
| 15:00 | Hull K R vs Salford |
| 15:30 | Wakefield vs Catalans Dragons |
| Friday 12th February | |
| 20:00 | Salford vs Crusaders |
| Time | Result |
|---|---|
| Engage Super League | |
| Saturday 10th October | |
| Leeds 18 - 10 St Helens | |
| Saturday 3rd October | |
| St Helens 14 - 10 Wigan | |
| Friday 2nd October | |
| Leeds 27 - 20 Catalans Dragons | |
| Saturday 26th September | |
| Hull K R 16 - 30 Wigan | |
| Friday 25th September | |
| Huddersfield 6 - 16 Catalans Dragons | |
| Sunday 20th September | |
| Wigan 18 - 12 Castleford | |
| Saturday 19th September | |
| St Helens 15 - 2 Huddersfield | |
| Wakefield 16 - 25 Catalans Dragons | |
| Friday 18th September | |
| Leeds 44 - 8 Hull K R | |
| Sunday 13th September | |
| Castleford 35 - 22 Celtic Crusaders | |
Paul Sculthorpe and Brian Carney told skysports.com that development is the key for league success.
Sky Sports and engage Super League have confirmed the first live matches for Super League XV...
England defence coach Mike Ford is reported to be in the frame for the England rugby league head coach's job.
Huddersfield Giants have signed former Gateshead player Jamie Cording, initially on a part-time contract.
Canterbury Bulldogs goalkicker Daniel Holdsworth has agreed to join Salford City Reds for their 2010 engage Super League campaign.
New Zealand-born prop James Stosic has been warned by Wakefield to obtain a Macedonian passport by the end of the month or be released.
Bradford have declined to comment on a report that another player is seeking to block the club's signing of Matt Orford.