Injuries have been a problem for Sheffield Wednesday throughout the 2014/15 season.
Sam Hutchinson and Joe Mattock are battling to regain fitness before the end of the year while Lewis Buxton is still nursing a knee problem.
Although first-choice goalkeeper Keiren Westwood is expected to shrug off a hip injury before Saturday’s televised clash at Huddersfield Town, Kieran Lee and Giles Coke remain doubts with groin and Achilles injuries respectively.
The midfield pair have been forced into having pain-killing injections as they aim to rediscover their best form.
Gray told The Star: “What we do need is everyone out of the treatment room to add that little bit more competition for places. That’s what we have been missing.”
Caolan Lavery is back in training after recovering from a serious knee injury to boost Gray’s threadbare squad. It is unlikely the striker will be included in the match-day squad to take on Huddersfield but Gary Taylor-Fletcher should be fit to face his old club.
One man who will be pushing for a first-team recall is Royston Drenthe. The skilful Dutchman is available for selection again after serving a one-match ban for his red card against Bournemouth. Drenthe will be vying for a wide berth with Jeremy Helan and Jacques Maghoma.
Ahead of the league tussle at the Galpharm Stadium, Gray will also check on Kamil Zayatte’s fitness. The centre-back has been away on international duty with Guinea.