3. Jakub Kiwior

He's often been just another name on the squadsheet, but Kiwior has done more than enough to prove he's better than that. The Poland international wasn't out of place when Arsenal dismantled Real Madrid in Europe, when Gabriel's absence was expected to be keenly felt.
Kiwior faltered slightly since those glory nights against Los Blancos, but he was exceptional against Newcastle. Quick on the deck and sound with his positioning, Kiwior yielded next-to nothing against a forward line admittedly lacking punch without star man Isak.
Even when the Magpies did get beyond Kiwior, the 25-year-old showcased previously unheard of recovery pace to preserve Arsenal's slender lead. Like when Kiwior somehow got back to slide in ahead of an onrushing William Osula and take the ball off his toe in a goalscoring situation.
Those last-ditch heroics were a worthy highlight of Kiwior's day, but another intangible was even more impressive. Notably, the way he assumed responsibility after central defensive partner William Saliba was withdrawn at the break amid a possible injury scare.
Kiwior never lost his composure and eventually assumed the buccaneering style of defending usually reserved for the more athletic Saliba. Arsenal needed a leader at the back while the bedrock of their rearguard nursed injuries, and Kiwior answered the call.
That initiative might be enough to make Arteta think twice about parting ways with the former Spezia Calcio man. The Saliba and Gabriel partnership will still be fundamental to Arsenal's prospects next season, but having a third quality centre-back is a luxury Arteta can afford to indulge.