```html Arsenal Grind Out Victory Against Manchester United Amidst Tactical Tweaks

Arsenal secured a hard-fought 1-0 victory against Manchester United at Old Trafford on Saturday, courtesy of a Riccardo Calafiori goal stemming from a set-piece. While the win provides a positive start to their Premier League campaign, the performance raised questions about the team's evolving style of play and the integration of new signings.

United Dominate Possession, Arsenal Clinch Result

Despite Manchester United controlling the majority of possession (61%) and registering 22 shots, Arsenal's resilience and clinical set-piece execution proved decisive. The Gunners struggled to impose their game for extended periods, particularly in the first half, with manager Mikel Arteta visibly animated on the touchline.

Arteta acknowledged the team's imperfections in his post-match press conference, emphasizing that it was only the first game and new players are still adapting. However, he highlighted the importance of securing a win even when not playing at their best, a characteristic he believes is crucial for trophy aspirations.

Gyokeres Still Finding His Feet

A key talking point was the performance of new £64m striker Viktor Gyokeres, who failed to register a single shot. Arsenal have seemingly adopted a more direct approach this season to maximize Gyokeres' strengths. Arteta conceded that the forward "did a lot of things very good" but needs to improve his pressing. He also noted the team's failure to exploit the space behind the United defence, which would have showcased Gyokeres' qualities.

Daniel Sturridge, speaking on Sky Sports, offered his perspective on Gyokeres' integration: "Arsenal have been playing with a striker in Kai Havertz that is very different to Gyokeres, so it does take time to get used to the new player's runs. He is also going to have to alter his game, it's not just about the team changing for him but him changing for the team. That's what it takes to hit the ground running."

Calafiori's Impact and Midfield Adjustment

Match-winner Riccardo Calafiori, deployed at left-back for his attacking potential, occasionally left Bryan Mbeumo exposed, allowing United to create opportunities. The midfield trio of Martin Zubimendi, Martin Odegaard, and Declan Rice, making his first start, also appeared to need more time to develop cohesion.

Set-Piece Prowess Proves Decisive

Arsenal's continued excellence from set-pieces, a hallmark of Nicolas Jover's influence since joining as set-piece coach in 2021, proved crucial. Calafiori's goal marked their 31st from corners since the start of the 2023-24 season, significantly surpassing Liverpool's 20 in the same period. The goal originated from a new routine trialed during pre-season, highlighting the meticulous planning behind their set-piece success.

Title Contenders? Resilience a Key Factor

The Arsenal players celebrated enthusiastically with their fans after the final whistle. Arteta emphasised the momentum and confidence gained from the victory, stressing the need for consistent resilience throughout the season. "The team has to find that resilience throughout the season for 10 months, in different contexts, to be able to do that," he stated.

Clinton Morrison, former Crystal Palace striker and BBC Radio 5 Live pundit, believes Arsenal's ability to win even when not at their best is a sign of potential champions. "That's the sign of champions when you don't play well and still get the three points," Morrison said, highlighting the contrasting performances of the goalkeepers as a key difference.

Former Manchester United player and Sky pundit Gary Neville observed that "Arsenal had to change" their approach after a sub-par first half. He acknowledged their resilience, stating: "Arsenal really dug in and showed a lot of resilience. Arsenal were never at their best but to come here to Old Trafford, or over to Manchester City, and get three points is big."

Looking Ahead

While the victory provides a positive foundation, Arsenal will need to address their tactical fluidity and integrate new signings more seamlessly to consistently challenge for the Premier League title. The resilience displayed at Old Trafford, however, offers a promising glimpse of their potential. ```