Leeds United defender Stephen Warnock was set to be their most vital player in the second part of the season.
The impending sale of Stephen Warnock to Derby County, reported by the BBC, can only go down as a major concern for Leeds United supporters, as their season continues to unravel.
Fans of the Whites went into the campaign full of anticipation after a particularly active summer transfer window, but this optimism around Elland Road has quickly evaporated.
Leeds are fighting against relegation and looking nervously over their shoulders, as they sit just two points above the drop zone with their form looking worrying poor.
The club have suffered a tumultuous season - with three different managers taking charge and their owner, Massimo Cellino, being banned by the Football League - and it appears they are struggling to cope with all the unrest.
The side have not picked up a win since November and a number of their squad are not playing to their optimum potential.
One player who could not have been accused of that was Warnock. The left-back was arguably in line to land the Yorkshire club's Player of the Season award after a run of stellar performances at left-back, and his role in the team was only set to become more integral as the campaign progressed.
Leeds possess a cosmopolitan squad, but the influx of Italian players brought in over the summer has harmed them rather than helped them progress.
Too many of their squad are still acclimatising to the rigours of Championship football and are struggling with the pressure on them.
With that scrutiny only set to increase, the experience of Warnock was set to be key so to lose his calming presence could be a massive blow.
Charlie Taylor seems an adequate replacement should Warnock depart, in a footballing sense, but there can be no price put on the England international's knowhow.
Neil Redfearn had previously stated that he wanted to add Football League hardened players, but it looks like he has already lost his most experienced player and the cost of this could be monumental in May.