Everton winger Henry Onyekuru who is on loan at Galatasaray has had his return date set following a hamstring injury.
The Lions have revealed that they expect the Nigeria international back in action within three weeks time.
Onyekuru is set to return to action sooner than initially expected.
The Everton loanee has two goals in 10 assists this term.
Despite getting off to a good start his form took a dip over the past few weeks and he was due to have a meeting with Fatih Terim over getting back on track.
The 21-year-old will however, miss key games against Schalke in the Champions League on Wednesday and the Intercontinental Derby against Fenerbahce.
The winger will miss five games in total against Malatyaspor, Fenerbahce and Kayseri in the league, as well as both Champions League, encounters with Schalke.
Onyekuru will be joined by Sofiane Feghouli and former Manchester City midfielder Fernando on the sidelines.
All three players are out for the next three weeks and have the same return dates set.
The latest injury development has left Galatasaray manager Fatih Terim short of options leading into the Schalke clash.
The Bundesliga outfit are also facing an injury crisis and will be without first-choice keeper Ralf Fahrmann.
Also Naldo is out with the flu and Fanco Di Santo will miss the game with injury.
Schalke 04 Squad
Goalkeepers: Alexander Nübel, Yannic Lenze
Defence: Hamza Mendyl, Matija Nastasic, Benjamin Stambouli, Salif Sané
Midfield: Weston McKennie, Omar Mascarell, Suat Serdar, Nabil Bentaleb, Yevhen Konoplyanka, Sebastian Rudy, Daniel Caligiuri, Amine Harit, Alessandro Schöpf
Attack: Mark Uth, Guido Burgstaller, Steven Skrzybski, Breel Embolo