Queens Park Rangers have been dealt a blow regarding the fitness of Sam McCallum ahead of their upcoming Championship fixture.

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In recent comments cited by West London Sport, Mark Warburton revealed that the Norwich City loanee will once again be unavailable for the visit of Birmingham City on Tuesday evening, as the left-back is yet to recover from a hamstring injury sustained in the Rs' Carabao Cup penalty shootout victory over Everton last week.

Speaking about the current condition of the defender, the 59-year-old QPR boss said: "He won't be ready for the game."

Fans will be gutted

Considering just how impressive McCallum has been since completing a season-long loan switch to the Kiyan Prince Foundation Stadium in the summer transfer window, coupled with the fact that fellow QPR left-back Lee Wallace is also currently sidelined due to injury, the news of the 21-year-old's continued absence is sure to have left fans of the club gutted.

Indeed, over his four Championship appearances for QPR so far this season, the £3.15m-rated defender has already bagged two goals, as well as taking an average of 1.5 shots and making 0.8 key passes per game.

The £5k-per-week left-back has also impressed in metrics more typical of his position, making an average of 1.3 interceptions, 1.8 tackles, 0.5 clearances and winning 5.5 duels per match.

These returns have seen the man Warburton himself dubbed a "quality" talent earn an average SofaScore match rating of 6.92, ranking him as the Rs' ninth-best player in the second tier.

As such, being without the 21-year-old for the visit of Birmingham on Tuesday will undoubtedly come as a major blow to QPR's chances of picking up a positive result against Lee Bowyer's side, as McCallum has not only been solid at the back for the Rs but also highly influential going forwards.

In other news: Huge blow: Warburton confirms double QPR injury setback which will leave fans gutted