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.
Borussia Dortmund have signed Thorgan Hazard from Bundesliga rivals Borussia Monchengladbach, handing the Belgian a contract until 2024.
Borussia Dortmund look set to sign Thorgan Hazard from Borussia Monchengladbach, provided the clubs can thrash out terms.
Borussia Monchengladbach sporting director Max Eberl has revealed Thorgan Hazard is looking to find a new home.
Haris Seferovic scored three times to spearhead Switzerland to a famous win over Belgium that booked them into the Nations League Finals.
Thorgan Hazard, Ondrej Duda, Alassane Plea, Timo Werner, Max Kruse and Borussia Dortmund forward Marco Reus are nominated for September.
Eden Hazard expressed his satisfaction after his talk with Romelu Lukaku helped deliver some good form from the striker at the World Cup.