Basaksehir coach and players said fourth official Sebastian Coltescu of Romania had used a racial slur against Webo, who is from Cameroon, before he was sent off.
Players from both teams walked off the pitch in protest.
Basaksehir coach and players said fourth official Sebastian Coltescu of Romania had used a racial slur against Webo, who is from Cameroon, before he was sent off.
Players from both teams walked off the pitch in protest.