Hazard and Casemiro test positive for COVID-19

The 27-year-old winger is in the Red Devils' squad for the friendly with Switzerland and Nations League matches against England and Denmark, all of which are in the next nine days.

Hazard has only played 135 minutes of Bundesliga football this season due to a ruptured thigh muscle ruling him out for around a month.

But the busy schedule of elite players – particularly those whose clubs have qualified for continental football – is not lost on him.

UEFA has received significant flak for its part in the increasingly busy calendar, as it opted to turn the October and November international breaks into three-match periods instead of sticking with the usual two games, a move it says was made to recover the dates postponed in March due to the coronavirus pandemic.

"It's all too much, not just for me," Hazard said. "Champions League, Bundesliga, Nations League…I don't want to complain too much because we have to do our job, but it is a lot.

"Well, here at the Red Devils, everyone will get playing time. The national coach has selected many players. Playing them in all three matches for 90 minutes would be difficult.

"The players will not burn themselves out. Our coaches also ask us to be careful, not to risk too much.

"We also play with Dortmund every three days. It is a difficult issue – the national coaches also have to do their job. If we don't feel well, let's just say so."

Belgium has already lost three players to injury on Monday, with Leandro Trossard, Alexis Saelemaekers and Hendrik van Crombrugge pulling out – only the latter has been replaced, with Blackburn Rovers goalkeeper Thomas Kaminski called up.

Hazard's brother Eden was already ruled out having recently tested positive for coronavirus, meaning the Real Madrid winger will have gone more than a year without playing for Belgium by the time of his next cap.

"One year is indeed a long time," Thorgan Hazard said of his older brother's absence. "I hope this will be over soon. Both Belgium and Madrid miss Eden.

"He is one of the best players in the world and it is always better to have him in your squad. Madrid lost last weekend without him and the Red Devils were also defeated in England. We all need an Eden at 100 per cent.

"Nevertheless, he feels good. He is in good health and shows no symptoms [of COVID-19]. He is quarantined at home in Madrid and unfortunately he is not here.

"It was really a surprise for him, an unpleasant one. The injury was gone and then coronavirus was showing up. I really hope that next time there is not something again.

"He's really unlucky. These are another two weeks gone. What can he do about it? Nothing."