Pep Guardiola says Manchester City will not challenge for this season's Champions League title unless they learn from their dramatic 3-2 win at Schalke with 10 men on Wednesday.

"We will not go far in this competition unless we improve," said City manager Guardiola. "At the end, the quality of [Leroy] Sane and [Raheem] Sterling made the difference. The result is good, but we gave the first two penalties away and the red card, so we are not ready to fight for the Champions League."