Pep Guardiola claimed his Manchester City side would need to sharpen up in front of goal after labouring to a hard-earned 3-0 win over Olympiacos in the Champions League.

City ultimately looked comfortable as they maintained their 100 per cent start in Group C but they needed late goals from fit-again Gabriel Jesus and Joao Cancelo to wrap up the win.

Ferran Torres gave City a 10th-minute lead as they made a strong start at the Etihad Stadium but Olympiacos were in the ascendancy before substitute Jesus turned the game decisively in their favour on 81 minutes.

Guardiola said: “We missed the chances to score more goals, in that way we have to finish the game. At 1-0 the game is open, they created chances.

Olympiacos coach Pedro Martins felt his side pushed City well but paid the price for a poor first-half display.

He said: “We didn’t start very well. That is something we have to sort out. It doesn’t happen all the time but today we were exceptionally bad in the first half.

“We let City dominate the first half and we gave them a lot of space. It is something we have to address.

“We showed in the second half we could be a lot better. We improved our performance.

“We had a few opportunities to score and for 30-35 minutes if one team was going to score it was Olympiacos.”