Pep Guardiola copied Jurgen Klopp before revealing what he thought about Kalvin Phillips

Pep Guardiola channelled his inner Jurgen Klopp for Manchester City's first pre-season clash of the summer.

After the Kenan Memorial Stadium was evacuated 90 minutes before kick-off for a severe weather warning - despite glorious blue skies overhead - Guardiola was first out onto the pitch in Chapel Hill when the all clear was given. He stayed out for the warm-ups, later taking a seat pitchside, in what is a departure from his usual routine before a game.

The manager usually prefers to let his coaches lead the warm-ups, sometimes sitting in the dugouts for a short while before retreating when his players emerge. Here, he watched everything, even the Celtic preparations, and was animated throughout a testing evening for his young squad.

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Guardiola said in the build-up that he feels refreshed and excited for the new season. A new tactic was on show, too. Or a new twist on an old tactic.

Rico Lewis, who declared his ambition to play in midfield this week, was back at full-back, inverting inside to accompany Kalvin Phillips. On the opposite side, Josh Wilson-Esbrand did the same, creating a double pivot of full-backs alongside Phillips, who would drop deep alongside the two young centre-backs on show.

It was a system that looked promising, but Celtic quickly exposed it. Phillips almost put Stefan Ortega into danger in the first minute, and the Scots led when Luke Mbete pressed a ball that was never his, Phillips followed him, and Nicholas Kuhn had the freedom of North Carolina to finish.

Wilson-Esbrand didn't know whether to stick or twist, and did