FC Basle defeated Manchester City 2-1 at the Etihad tonight in their Champions League dead rubber.
City's 4-0 away win meant the second leg was a formality, with Pep Guardiola resting several first-team players.
Gabriel Jesus opened the scoring by tapping home Bernardo Silva's cross.
But Mohamed Elyounoussi lashed home a leveller and then set up Michael Lang's second-leg winner.
Afterwards, City boss Pep Guardiola remarked: "The first half was quite good but in the second half we forgot to attack, we forgot to play. When we pass the ball we do it to move through the opponents to attack - just to pass the ball for itself (like we did) is nothing and the second half was really really poor.
"It is not easy to play with a 4-0 lead. We tried, we spoke about that and I think what we showed in the first half we showed we wanted to win the game. We created a lot of chances and we were good.
"But after 1-1 in the second half, it didn't happen. We just passed for itself and when that happens, that is not football."