Jose Mourinho has accused the football authorities of “not giving an ‘s'” about English teams in European competition.
The Manchester United boss vented his frustration after his team scraped through to the quarter-finals of the Europa League with a 2-1 aggregate victory over Rostov.
The match came three days after they played with 10 men in an FA Cup loss to Chelsea and only 64 hours before a Premier League trip to Middlesbrough on Sunday.
United are the only team in the top six left in European competition, which Mourinho feels puts his side at more of a disadvantage than it should do.
He said: “We played 11 matches in the last six weeks. It is going to get worse and it’s going to get easier for the other five teams. Now it’s very difficult for us.
“I don’t understand that we don’t have any help in relation to European football. I’m saying this for many many years, even from my first spell in England.
“I don’t ask for me, I ask for everyone. I think they don’t give an ‘s’ about the English teams in Europe. They don’t care. There are other interests that are more important.
“Every (other) country they try to do that little support to the teams in European football. Why us, Sunday 12 o’clock? It is going to be even more difficult for us but we go until our limit, like Marcos Rojo.”