Arsenal's defensive frailties were exposed in a 3-2 pre-season friendly defeat against Borussia Dortmund, with the absence of key defender William Saliba exacerbating concerns about the team's backline. The Gunners have conceded six goals across their last two matches, highlighting a lack of cohesion at the back that manager Mikel Arteta must address swiftly.

Saliba's ongoing back injury has created a significant void, shifting the team's defensive balance. The ease with which Dortmund exploited spaces in Arsenal's defense, leading to two first-half goals, has intensified speculation that the club is actively seeking a center-back. Cristian Romero has reportedly been assessed as an option, though competition from Tottenham Hotspur is expected.

Arteta acknowledged the impact of Saliba's absence, stating, "When he's been available, he's hit form. And the stats are incredible. So we know that we lost a massive player." The team is also managing the situation with Jurrien Timber, another player unavailable due to injury.

In attack, new signing Christos Tzolis has shown promise and eagerness to seize opportunities on the left wing. His assist for Ethan Nwaneri during the match demonstrated his attacking attributes, providing a potential solution for Arsenal's forward line as they continue to hunt for new talent after missing out on Vinicius Junior. However, the club remains open to offers for Gabriel Martinelli, with Galatasaray reportedly interested, should the right financial terms be met.

New signing Christos Tzolis looks eager to take his chance on the left wing after Arsenal missed out on Vinicius Jr

The arrival of Bruno Guimaraes, a marquee signing for the summer, has generated excitement among fans. His addition bolsters an already strong midfield that includes Declan Rice and Martin Odegaard, adding an aggressive edge and facilitating more ambitious passing play. The midfielder was unveiled to supporters following his reported £75 million move from Newcastle.

Bruno Guimaraes was unveiled in front of the Arsenal fans after his £75m move from Newcastle

Meanwhile, forwards Viktor Gyokeres and Kai Havertz are beginning to demonstrate their potential as a complementary pairing. Arteta has tested them together in consecutive pre-season matches, exploring whether they can effectively operate in the same lineup. While further integration is needed, their link-up play, including an attempted assist from Havertz to Gyokeres, suggests they could offer a viable option for the upcoming season.

Viktor Gyokeres linked up with Kai Havertz in attack with the pair showing enough to give Arteta another option ahead of the new season

Arsenal have conceded six goals in two pre-season matches and must address their leaky backline fast

The Gunners are in the market for a centre back to strengthen their options alongside Gabriel