Luciano Becchio is a doubt for Leeds United's FA Cup replay with Arsenal after sustaining a back injury in the club's 4-0 defeat of Scunthorpe United.
The striker was substituted after 45 minutes of Saturday's Championship game at Elland Road and Leeds were assessing his fitness this morning
with their third-round tie against Arsenal looming.
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United's leading scorer has missed only one first-team fixture this season and he was part of the squad which held Arsenal to a 1-1 draw at the Emirates Stadium nine days ago, but manager Simon Grayson is unlikely to gamble on his condition with a league game at Portsmouth following Wednesday night's replay against Arsene Wenger's side.
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Grayson has a number of selection concerns, and Lloyd Sam was not involved in Saturday's win over Scunthorpe due to a thigh strain. Loan signing George McCartney, meanwhile, is ineligible for the FA Cup replay having rejoined Leeds on loan from Sunderland after the initial tie.
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Grayson said: "Luciano took a knock to his back and we felt it was best
to take him off at half-time. But I don't think there'll be too many players complaining of injury when we start getting ready for the Arsenal game."
United's boss paid little attention to the replay against Arsenal as he prepared for Leeds' meeting with Scunthorpe, but he was happy to focus on another televised fixture after watching a comprehensive Championship win at Elland Road.
Leeds are anticipating a capacity crowd on Wednesday night and tickets for the game went on general sale after full-time on Saturday.
Grayson said: "Arsenal were never mentioned last week. The focus was solely on Scunthorpe and that's what you have to do. You can't afford to take your eye off the ball.
"It was far more important than the Arsenal game last week or the Arsenal game on Wednesday night. But we've given ourselves an opportunity to concentrate on Wednesday's game with a good performance and a clinical performance.
"We're underdogs again and we should be against Arsenal. But we earned the right to bring them back here and we'll go out with the attitude that we can win the game and give them a tough night."
Ben Parker is likely to return to Grayson's line-up at left-back against Arsenal having made way for McCartney on Saturday.
United landed McCartney from Sunderland for a second time on Friday morning, signing the Northern Ireland international on loan until the end of the season.
Grayson said: "He's a good player and I've got competition between him and Ben now."