"We're very happy about Musiala's development, he's very calm on the ball and the football world can look forward to what will come of this young talent," Flick said recently.
Robben's much anticipated return to his home town club FC Groningen has proven a disappointment as he has played just 44 minutes in two appearances in the Dutch league this season.
The only surviving former winners of European club football's greatest prize – with five titles each – meet in a heavyweight Champions League quarter-final behind closed doors at the Estadio da Luz.
Cristiano Ronaldo could face his former team Real Madrid in the Champions League quarter-finals as the draw for the rest of the tournament was made on Friday.