If we win tonight he should get plenty of game time in these European matches and maybe if he plays well he will get opportunities in the league.
As you say Traore makes little sense from where I sit, we have 4 (5 if you include Sessegnon) wide players, for 2 places in the team and that is well covered in my opinion. An actual striker, a playmaker, a right back and a quality centre back should all be on the list before more wingers.