Pep Guardiola probably feels that he still has unfinished business at Manchester City.

The Spaniard has won two Premier League titles and the EFL Cup during his time at the club, and an FA Cup winners’ medal could soon follow.

But Guardiola is yet to lead City to the one trophy the club’s fans are craving: the Champions League.

In his three seasons at the club, City haven’t progressed further than the quarter-final.

His efforts in Europe continue to give his critics ammunition.

So the idea that Guardiola could turn his back on Man City and pursue another challenge seems rather preposterous.

But Rivaldo, his former teammate at Barcelona, believes it’s a genuine possibility.

'Guardiola could leave this summer'

The Brazilian believes Guardiola will have other projects to think about in the summer, and could return to Spain to be with his family and friends.

“Of course, when you perform well it's normal that other top clubs become interested in your services,” Rivaldo told Betfair.

“I believe Pep will have other opportunities and new projects to think about this summer and, despite his apparent satisfaction at the Etihad, perhaps a good proposal from a Spanish club could interest him.

“I’m saying this because Pep doesn't like to be away from his family and friends and really enjoys the time spent with them, so a possible return to Spain would be helpful.”

Guardiola hasn’t hinted at leaving the Etihad Stadium.

Indeed, he’s already warned his team’s rivals that they will be even better next season.

“Next season we will be stronger, I am sure. We will be stronger. We will be better,” he said, per the Daily Mail.

Better than 97 points, an EFL Cup win and FA Cup final?

That’s a scary thought.

And of course, Guardiola will be fuelled by a desire to land the Champions League.

Rather incredibly, he hasn’t won the trophy since 2011.