Pep Guardiola sends Man City warning about Manchester United boss Erik ten Hag and defender Lisandro Martinez

Pep Guardiola expects Manchester United to provide Manchester City with a quality test in Sunday's derby, as he comes up against Erik ten Hag for the first time.

Guardiola and Ten Hag were both at Bayern Munich when the former was manager, and they have been full of praise for each other previously. Now, ahead of Sunday's first derby of the season, Guardiola said he has been impressed by United's progress in a short time under Ten Hag, warning his City players to be ready for a tough game.

United have overhauled their squad this summer, with a number of new signings set to feature at the Etihad - including Argentine defender Lisandro Martinez, who Guardiola said will be dangerous if City underestimate him purely because of his height.

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"Always I expect the best," Guardiola said of Ten Hag's United. "The quality they have has been clear, they got very good results against top sides, Southampton, Arsenal at home, Liverpool at home. The momentum is there.

"I don't have to say anything before big games, there are plans to attack and defend and that’s all, always I believe it’s a big opportunity to express our skills they have, in front of thousands, millions of people. We do it for them, we be ourselves, what we are as a football player.

"The best way is to be yourself and try to show as much as possible. Don’t be scared, be up front and try to play good, if you do the consequences will be victory. I prefer to be active rather than reactive. My teams have always been like this."

On Martinez, who is shorter than most centre-backs, Guardiola said the height difference between him and striker Erling Haaland means little