Leon Balogun, Ridvan Yilmaz and Kieran Dowell have missed out on the Rangers squad for their Europa League squad.
However Kemar Roofe and Tom Lawrence are both included by Michael Beale despite missing out on the squad for the Champions League qualifiers.
Both players were on their way back from long-term injuries when the Servette and PSV games were played.
Dowell has made six appearances since his summer move from Norwich, including three in the Champions League.
He has missed recent matches with a minor knee injury.
Balogun has played twice since returning to Ibrox in the summer following a season with QPR and Yilmaz has made one appearance this season.
Scott Wright is in the squad while Rangers confirmed the likes of Leon King and Adam Devine would be included on the list of young players who can feature outside of the 25-man squad.
Rangers open their group campaign at home to Real Betis on September 21 and also take on Aris Limassol and Sparta Prague.
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