HULL have failed in their attempt to sign Castleford Tigers half-back Rangi Chase ahead of Friday's transfer deadline, despite agreeing terms with the 26-year-old England international.
Hull were unable to secure a visa in time for Chase (pictured) to join them this season.
New legislation in the application scuppered their hopes of signing Chase, although they will still look to secure him for the 2013 campaign.
"I'm massively disappointed not to sign Rangi ahead of this afternoon's deadline," Hull chairman Adam Pearson told the club's official website.
"We've put a lot of effort in over the last 10 days to get him and he was really keen to come here.
"The deal was all set up and he was obviously going to be a very expensive player but one I thought would put bums on seats, give us a bit of creativity and put a spark back into the club.
"Unfortunately, visa legislation has changed during the past week or so and this has scuppered the deal for now, but Rangi is still very much on the radar.
"We'll just keep trying. We are the club trying to overcome the hurdles the UK Border Agency has put in front of us and we have a team of excellent lawyers in London working on this on the club's behalf."