For many years, almost everyone, from fans to pundits, have agreed that Arsenal are in desperate need of top-class players in the central defensive, central midfield and centre-forward positions.
Their reported £29.3 million bid for Lyon striker Alexandre Lacazette was rejected earlier this week, but they did begin the summer by acquiring Swiss playmaker Granit Xhaka from Borussia Monchengladbach.
With 31-year-old Per Mertesacker ruled out for five months, manager Arsene Wenger has admitted that he needs to sign another central defender in the transfer market - and Shokdran Mustafi would be the perfect signing.
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What will Mustafi bring to Arsenal?
Ever since Shokdran Mustafi joined Valencia from Sampdoria nearly two years ago, he has proved that he is an excellent defender. The 24-year-old made over 40 starts last season and was one of the few consistent performers for a club which sacked three managers, including Gary Neville.
The German international is a proper centre-back who is completely willing to put his body on the line to prevent the opposition from scoring. He is strong, very dominant in the air and a brilliant tackler, but he can also organise those around him - something Arsenal have lacked for a long time.
He anticipates dangerous situations almost instantly and he isn't afraid to clear his lines. That said, Mustafi is decent on the ball too, and Wenger likes all his players to be comfortable in possession.
So, if he were to move to Arsenal, unlike most signings, he wouldn't need to adapt his game because he is already well suited to the physical nature of English football.
Mustafi would bring vital experience despite his young age, having played in La Liga against the world's most talented forwards. He also scored for Germany at Euro 2016 and represented his country in their 2014 World Cup triumph in Brazil.
Will he join Arsenal?
According to Sky Sports, the Gunners are in talks to sign Valencia's star defender but are yet to make an offer for him. Mustafi, who has a whopping release clause of £42.1 million, returned to training with the Spanish club yesterday after an extended break following the Euros.
Strong Arsenal defence
Manchester United signed Eric Bailly and Manchester City are interested in John Stones, but Mustafi partnered with French star Laurent Koscielny would be as formidable as any central defensive pairing in the entire Premier League.
When you then consider PFA Team of the Year member Hector Bellerin and the much-improved Nacho Monreal, the Gunners could have an excellent back four from which to mount a serious title challenge next season.
Do YOU think Mustafi would be a good signing for Arsenal? Have YOUR say in the comments box below!