Manchester City captain Fernandinho feels Jack Grealish has lifted the quality at the Premier League champions.

Grealish joined City over the summer from Aston Villa.

"I think the biggest challenge can be us," he said.

"If you relax and think the job is done, this is the biggest mistake. If we keep going, the same way we have kept going since last season, I think we have a great chance of becoming champions again.

"Being champions again would be amazing, like a dream come true. We will try again and we will see at the end of the season.

"Jack (Grealish) has shown his quality already. We want the best players around us."