After the transfer window slammed shut and Arsenal finished the summer as English football's biggest spenders, many fans could be forgiven for not knowing too much about one of the late acquisitions.
Takehiro Tomiyasu signed on the dotted line from Bologna, and will look to become a permanent fixture in Mikel Arteta's back line at the Emirates.
Defence has been an area of much concern for the Spanish manager, who is now under real threat of losing his job before the campaign even gets out of the first few weeks.
Arsenal are yet to win or even score a goal in three Premier League matches. Newcomers Brentford have beaten them, as have both Chelsea and Manchester City.
The Gunners sit rock bottom of the division as a result and now the pressure is on for the new signings to hit the ground running.
But how much is known about the 22-year-old new boy Tomiyasu? Sportsmail took a closer look...
Arsenal pulled off the surprise signing of Takehiro Tomiyasu in the final hours of the window
Tomiyasu was seen as a rising star in Japan for some time, but he made the bold and very wise decision to move away from his homeland in order to sample European football.
It was a fearless move which football scouts and former managers have since commended, with the defender said to have markedly improved his all-round game as a result.
Last season was Tomiyasu's fourth outside of Japan plying his trade with Bologna after a winding journey across the continent.
Previously he had turned out for his hometown team Avispa Fukuoka between 2009 and 2017 - where he made his senior debut aged just 16 - before then opting for a change in direction and spending a season in Belgium with Sint-Truiden.
After quickly making an impression with his composure on the ball and aggression in the tackle, he sealed a switch to Serie A where he spent the past two seasons with Bologna after the Italians deemed him worth spending £7million on.
In Serie A Tomiyasu wasted little time in building a reputation as a front-footed defender with progressive thinking and a preference to travel with the ball where possible.
Tomiyasu left Japan in search of European football and has advanced hugely as a result
The youngster reportedly models his game on former Liverpool and Barcelona icon Javier Mascherano, who viewed tackling as a fine art and ultimately transitioned from a central midfielder to a centre back.
Tomiyasu gained further experience over the summer after turning out for the Japanese national team at his home Olympics, before the side suffered a premature elimination from the competition.
VersatileOne of the main criteria when signing an elite level defender in the modern game is an ability to fulfil a variety of roles, depending upon tactical formation or the specific opponent.
In Tomiyasu Mike Arteta has recruited a youngster who boasts perhaps one of the most flexible positional CVs
