Hegerberg, who was named the world's best football player in 2018, was seriously injured in January when she tore her cruciate ligament.
In mid-July, however, she was back when Lyon had a training camp in Poland and yesterday it was reported that the Norwegian was included in the registered group of players who may participate in the Champions League play-offs.
But when the team arrived today in Spanish Bilbao, where they will meet Hanna Glas and Amanda Ilestedt's Bayern Munich on Saturday in a directly decisive quarter final, Hegerberg was not present.
And she will not play in the playoffs. Lyon writes on their website that coach Jean-Luc Vasseur has called 22 players to the playoffs, and among them was Hegerberg - who was praised as the world's best player in 2018 - not included.