Report features in champ select

Back a few games I got a troll in champ select. Only thing I could do was dodge queue and lose 3 lp. I felt realy powerless so I sent a support ticket describing the situation and actualy calling out the player. They said they were working on it and asked me to use the report system, but I couldn't report him because I didn't want to play with him. Thats why I think there should be a report system implemented into the champion selection before the game even starts.