Manchester United boss Erik ten Hag says his players are at breaking point over the football calendar.
United's squad has been hit hard by injuries this season.
Every manager is complaining about the schedule," Ten Hag said.
On Thursday I heard the statements of (Bayern Munich head coach) Thomas Tuchel, every manager, but still they keep adding games to the schedule.
Next year they add again two games (in the new Champions League format) and the limits are we already achieved the limits. I think we already crossed the limits of what players can handle.
And then what we see now in the first 12 Premier League games, the physical standards are even higher in comparison to last year. You have a choice to make. Either you match it by training and preparation, or you drop off.
So that is a decision that every club has to make, every team has to make, every individual has to make."
Ten Hag added: You have to do it smart. Every team knows you have to suffer and sacrifice. If you want to prepare for games then at certain right moments you have to go to certain physical levels if you want to match those standards, and those standards are not set by us, but set by the opposition."