NEW signing Perry Whiteley will probably have to wait for his York City Knights debut after being named only on stand-by for Sunday's Betfred League One visit of North Wales Crusaders.

Head coach James Ford has named a 20-man squad rather than the usual 19, due to a number of injury concerns and late tests, so the 25-year-old centre, who joined from Keighley Cougars on transfer deadline day last Friday, may yet be called up.

However, as things stand, the consistent Brad Hey and top-scorer Joe Batchelor - who switched to centre from the second-row for last week's visit of Coventry Bears and bagged four tries against his former club - are set to continue in the threequarters.

Matt Chilton, the recruit from amateur neighbours York Acorn, also continues at full-back after his decent debut last week.

Keighley, meanwhile, have replaced Whiteley by bringing in former Knights captain James Haynes - announcing their deadline-day signing today. Full-back-cum-centre Haynes, who left York last season and stepped down from the pro ranks, has been playing this year in the local Hull league.

Staying with centres, Knights concerns are seemingly growing over Jake Butler-Fleming again.

After making his comeback in fine style in the win at Bradford Bulls a fortnight ago, the Aussie was left out of the side against Coventry last week as a "precaution". Now, though, he is set to go for a scan, with the latest injury thought to be a recurrence of the pectoral issue which had ruled him out for six weeks.

Ford was waiting for results before commenting.

As regards Whiteley, he explained the performances of Hey and Batchelor was one reason the newcomer was not being thrown straight in.

He said: "It's because of their form and also because we'd prefer to spend a little bit more time with him so he can get used to our calls and systems and tidy up one or two things.

"However, he's looked good in training, especially in attack, and I don't think it will be long before we see him starting for us in the centres."

Ford has made changes in the pack, with Adam Robinson replacing Dan Hawksworth and Sam Scott back in for Mike Kelly.

Captain Tim Spears (knee) and Colton Roche (groin) are not quite ready to return but are expected back next week.

Ford said Hawksworth was "rotated" rather than dropped and admitted leaving out Kelly was a tough call.

"Dan's having a good season," he said. "He's improved immensely from when we initially signed him.

"There is tough competition for places in this team. He didn't have a bad game but it was not one of his best so we will give Adam Robinson another chance.

"It's an opportunity for him rather than a negative for Dan. Robbo has plenty of experience and has had some big games for this club and it's an opportunity for him to remind me and the rest of the coaching staff just how good he can be."

On Kelly, he added: "It's harsh on Mike - he had a good game last week. I expect him to be disappointed.

"Mike came to us off the back of two or three injuries that were hampering his career but he's had a good season.

"The conditioning staff have worked wonders with him and he's played 10 to 15 times and looked good.

"He's worked hard on getting his career back in the right direction."

Kelly remains in the 20, as does Harry Carter, with fellow hooker Andy Ellis likely to face a late fitness test.

North Wales will be without dangerous on-loan centre Earl Hurst while veteran former Super League star Stephen Wild is also not included, having come out of retirement prior to last week's loss to Workington.

Ste Roper - York's nemesis when dropping the goal that won last year's epic play-off semi-final for Whitehaven - and Simon Atherton are also ruled out.

However, former Halifax hooker Karl Ashall makes his second appearance after rejoining the club from Barrow, and in comes big Brad Brennan, the one-time York prop.

Former Keighley utility back Lewis Fairhurst is added, and Widnes loanees Brad Walker, Joe Lyons and Dan Norman all play.

The Cru recently signed Morgan Johnson, Will Mills and Jacob Hitchcox from their reserves set-up but none is involved in first-grade action this weekend.

Knights (possible): Chilton, Mazive, Hey, Batchelor, Robson, Cockayne, C Robinson, Horne, Jubb, Ronan Dixon, Jordan-Roberts, Scott, Edwards. Subs: Ellis, Ormondroyd, Porter, A Robinson. Stand-by: Carter, Kelly, Whiteley.

Crusaders: from T Johnson, Knox, Fairhurst, Trumper, Bloomfield, Lyons, Smith, Baker, Dandy, Bate, Houghton, Norman, B Walker. Subs: from Ashall, Hudson, Brennan, Fairhurst, Moore, Thompson, A Davies.