Queens Park Rangers manager Gareth Ainsworth says the financial trickle down from the Premier League to the EFL is being "killed" by foreign players.
On Monday, Wigan became the fourth Championship club this season to be be sanctioned for financial problems.
"It's just getting harder and harder with the influx of foreigners in the Premier League," said Ainsworth.
"They seem to be going elsewhere for their players now and the money isn't coming to the Championship anymore."
He added: "It really is killing it - the pyramid is tough to keep going and teams seem to be getting punished for it.