Jadon Sancho, Axel Witsel, Thorgan Hazard, Raphael Guerreiro, Dan-Axel Zagadou and Manuel Akanji were seen getting haircuts without masks.
Borussia Dortmund wasted little time in getting back up to speed with a 4-0 victory over Schalke as the Bundesliga returned.
Goals from Thorgan Hazard and Achraf Hakimi helped Borussia Dortmund to a 2-1 victory over Borussia Monchengladbach.
Erling Haaland did not take a full part in Borussia Dortmund's mid-season training camp and Lucien Favre does not want to risk his fitness.
Eden Hazard assisted the opening goal for his younger brother Thorgan and then scored twice as Belgium beat Russia 4-1.
Inter have put themselves in a stronger position to reach the next round of the Champions League after seeing off Borussia Dortmund.
Having both missed club action with respective thigh and rib injuries, Eden and Thorgan Hazard will sit out of Belgium's two qualifiers.
Thorgan Hazard has started both of Borussia Dortmund's Bundesliga matches since joining but has now been sidelined by a rib injury.
Ahead of the Bundesliga season commencing on Friday, we assess the five best signings made by clubs in Germany's top flight.
Scotland travel to take on Belgium in a key Euro 2020 qualifier in Brussels and the hosts could have a musical welcome in store.