Tottenham manager Mauricio Pochettino has taken aim at broadcasters and the Premier League.
Spurs had to play against Leicester City on Sunday, despite neither team playing a midweek game last week, as broadcasters pushed had the game moved.
Pochettino's side face Borussia Dortmund, who played on Saturday, in the Champions League last-16 on Wednesday.
"I was saying before about how upset I am. I feel so embarrassed because I can accept to play today if Dortmund play today and then we play Wednesday, but I cannot understand why we're playing with a massive disadvantage," Pochettino said.
"Twenty-four hours in this type of competition, the last 16, is a massive disadvantage. It doesn't mean that we're not going to compete. For me, I'm going to stop describing the real situation, but I think there is no sense.
"It is so difficult to understand why, when we had one week clear to play this game and to schedule it on a different day, and only I am explaining my feelings and how difficult it is to prepare a game when you only have today and then you're going to need to play.
"Then in different things we came from a very tough period. In England it's a busy period at Christmas. It's January when clubs in Germany, Spain or Italy enjoy some holidays and rest. That is why if you can be in a similar level, you need to play with the same situation. That is why I feel so disappointed."