The sight of Pep Guardiola holding up five fingers and telling his Manchester City side to dig in and hold on for victory at Old Trafford is the biggest giveaway that this was a very long time ago.It is almost exactly a decade, in fact, since the first Manchester derby of the Guardiola era, a time when Claudio Bravo and Zlatan Ibrahimovic were battling for high balls, Jose Mourinho was standing in the opposition dugout and Nolito was getting into scrapes with Marouane Fellaini.It was the first of many away victories against United under Guardiola, but it was understandably rough around the edges, considering it was just the Catalan’s fourth Premier League game in charge.Guardiola’s City went on to produce some masterclasses at the home of their biggest rivals, although good results at Old Trafford became harder to come by in the past few years, and on Saturday Enzo Maresca will take City across town — in what will also be his fourth league game as their manager — looking to keep up his good start.United have had seven different managers since Mourinho left in 2018 and although current head coach Michael Carrick was in charge of their crushing victory against City in January this year — his first game as interim boss after the sacking of Ruben Amorim — there is still a sense that they are finding their feet after a win, a loss and a draw to kick off the new campaign.There has been considerable upheaval at City this summer, with Maresca replacing Guardiola and influential players like John Stones, Bernardo Silva and Rodri departing, too. Having also sold off several players that had been expected to lead the club into a new era, like Omar Marmoush, Nico Gonzalez and Tijjani Reijnders, the squad looks hugely different to 12 months ago, let alone the 2022-23 treble-winning campaign, from which only four players remain.How striking it is, then, to see City close out a derby with Pablo Zabaleta and Bacary Sagna doubling up at right-back and Stones hoofing the ball up the pitch, as they did on that afternoon 10 years ago.Guardiola’s insistence that City would have to play better than that to win the Premier League or Champions League was put down to the Catalan’s famous perfectionist nature, but looking back now, knowing the levels they did go on to reach, it is strikingly obvious that it was far too early for the team to be anywhere near their full potential.City were on top for much of the first half that day; that much is true. United could barely get a sniff of the ball and many stereotypes about the two managers’ contrasting styles of play ended up bearing out. City were at their best when they dominated possession, although with more passes back to goalkeeper Bravo than incision in the final third, while Mourinho’s United looked most threatening with long balls up to their big men.