Jose Mourinho was sent to the stands against his former club Manchester United after the Fenerbahce boss protested a refereeing decision.
Mourinho was shown a red card by referee Clement Turpin after the hosts saw a penalty appeal turned down.
The Fenerbahce manager led the Turkish club's protests against the decision with the score level at 1-1 on the night.
Several Fenerbahce substitutes had joined Mourinho in demanding a penalty.
The home side had reacted with anger after seeing their appeals waved away by Turpin after Bright Osayi-Samuel went down under a challenge by Manuel Ugarte.
Jose Mourinho led Fenerbahce's protests as they appealed for a penalty against Man United
Mourinho was first pictured sat in the stands, but later moved to steps where he could be seen writing to send messages to the touchline via one of his coaching staff.
The former Man United boss had seen his side fight back against Man United in the Europa League clash.
Man United had taken the lead in the first half through Christian Eriksen, following a lay off by Joshua Zirkzee.
Fenerbahce drew level in the second half through Youssef En-Nesyri, as the forward headed in a cross from Allan Saint-Maximin.