Jonathan Walker’s proposed move to Hull FC looks in danger of collapsing after they switched their attention to Con Mika.
It has been reported that Hull have withdrawn their interest in the highly rated young prop forward, who still is still under contract with Castleford Tigers.
Walker, 22, whose twin brother Adam already plays on Humberside for Hull KR, was all set to make the move to the KC Stadium with Andy Lynch going the other way.
But despite Lynch signing for the Tigers, Hull are backing away from the Walker deal as they have been concerned about a knee injury which side-lined him at the end of the season.
There was no comment from Castleford on Walker’s future with the club, but he has a year left to run on his current deal.
Hull KR are also believed to be interested in signing him.
New signing Lynch, meanwhile, has spoken of his desire to help lift the Tigers up the Super League table next year having rejoined the club where he first made his name.
Lynch also revealed that current assistant coach Danny Orr played a big part in persuading him to come back to Castleford where he came through the academy system to play 137 games between 1999 and 2004.
Lynch said: “I think it’s great that I’m coming back to Cas next year.
“It’s been a long time since I’ve left and things have changed in some aspects, but the fans are still great.
“The players are willing to learn and keep improving and challenge for the top eight. It’s a really good and exciting time to come back.
“Danny Orr had a big influence on me coming back – I’m good friends with him and he’s been on at me for a while.
“I’ve spoken to Daryl and he’s got big plans for the upcoming season and beyond too. There are a lot of young lads in the team who have played lots of first team rugby and they will have learned plenty from playing those games this year.
“They will be a year better off and will be more experienced going into next year so it’s all going to help. It will also help the likes of Craig Huby and Michael Shenton, who have been there a while now.
“I want to help improve the young players coming through at Cas, take them on the right track and get them playing Super League week in, week out.
“I’m more experienced now. I’ve played around 400 games which is a lot more then when I was last down at Cas.
“My aim is to play consistently with Cas, help bring the young lads through and help the other senior lads who are already here.”