Bayer Leverkusen was left cursing its bad luck as a home draw against Barcelona saw the side narrowly miss out on qualification from Group E.
Roger Schmidt admitted he will never be able to forget the disappointment of Bayer Leverkusen's failure to qualify for the knockout stages of the Champions League.
The German club ended up missing out on second place in Group E due to its inferior head-to-head record with Roma, which joins Barcelona in going through to the last 16.
Leverkusen needed to better the Italian side's result against BATE to go through, but both sides drew their final match to finish on six points.