AC Milan forward Gonzalo Higuain continued his poor run as he wasted two shots in the first half, while Bologna forward Rodrigo Palacio forced a good save from Gianluigi Donnarumma.
Olympiakos edge out the 7-times European champions on goal difference and progressed along with group winners Real Betis.
Arsenal and AC Milan beat Qarabağ and Olympiakos respectively, while Sevilla lost to Krasnodar.
Touré returns to the club he played for in the 2005-2006 season.
Burnley were knocked out of the Europa League qualifiers by Olympiakos, while nine-man Rangers knocked out FC Ufa.
A Burnley fan was stabbed in the leg and four others were injured in clashes.