Burnley are under investigation after fielding a weakened side in their 0-0 draw with Reading last weekend, according to reports.
The Clarets fielded a much-changed starting line-up for their clash with the Royals, having just secured promotion to the Premier League the match prior.
Reading, on the other hand, are facing an entirely different scenario and picked up a precious point against the best team in the league.
However, according to the Sun, this caused some frustration with their relegation rivals Huddersfield, who then raised concerns when they saw six changes to Burnley's typical line-up.