The QPR striker was on crutches after yesterday's 1-0 loss to Southampton and the seriousness of his injury was unclear.
QPR chairman Fernandes, however, has allayed fears about Austin's long-term fitness, revealing that he will only miss one game in the wake of the Southampton defeat.
"Pleased to let you know that Charlie will only miss one game. Just heard from the doc. I know many were very concerned so letting u know asap," Fernandes wrote.
Such is Austin's undisputed value to this QPR side, however, that even one game could prove costly.
That said, the 25-year-old was present at Loftus Road yesterday and was powerless to stop the R's slumping to yet another defeat against Southampton.
Far from a side that wins their home games and loses away, the west London club now look like a team that simply lose all the time. And whoever becomes QPR's next boss will have to act quickly if the R's are to somehow stay up this season.
Next up for the Loftus Road outfit will be Sunderland away on Tuesday night, while Southampton host West Ham United the following day. Saints' win over QPR boosted their top-four credentials with Tottenham Hotspur closing in on them after beating Arsenal 2-1.