Arsenal and Chelsea go into Sunday’s London derby with both managers still weighing changes, but the sharpest question on the Arsenal side is whether Cristhian Mosquera can be trusted to start. He came off against Aston Villa on Monday, and with Jurrien Timber and William Saliba already out injured, Arsenal’s back line is settled only until the fitness check is done.
That is why Arsenal F.C. is being searched now: the shape of the XI is largely clear, yet one defensive decision could still move the whole picture. Ezri Konsa could make his first start for Arsenal if Mosquera is not fit, while Eberechi Eze, who replaced Christos Tzolis at halftime against Aston Villa on Monday, is also in line to start on the left wing. Kai Havertz is expected to float around up top and create space for Bukayo Saka and Martin Odegaard, a structure that has been discussed before in Arsenal F.c. Games: Havertz in line to start in PSG final.
The reason the Arsenal side looks more settled is simple enough: the main blanks are already visible. Timber and Saliba are unavailable, so the choices are less about invention than about deciding whether Mosquera’s body can handle another start after Monday. If he cannot, Arsenal may need to lean on Konsa sooner than planned, a move that would test a defense already thinned by absence rather than form.
Chelsea’s side of the match has a different problem. Emiliano Martinez is described as Chelsea’s first-choice goalkeeper, but the larger issue is the balance in front of him, where Wesley Fofana, Maxence Lacroix and Levi Colwill have not yet properly gelled as a trio. Moises Caicedo came off the bench against Brighton and was injured soon after, which leaves Romeo Lavia expected to start as he continues to regain fitness and form. Reece James is likely to join him in one holding midfield spot, after Malo Gusto struggled there against Brighton, while Pedro Neto has been more effective going forward as a right wing-back.
That gives Chelsea a team that still has attacking punch — Cole Palmer, Morgan Rogers and Joao Pedro are described as sublime individually and collectively — but one that is still being built around them rather than fully settled. Estevao, Jamie Gittens and Danny Welbeck are there as bench options if the game turns, which is useful in a derby that can change quickly. Sunday should show whether Arsenal’s near-fixed shape is enough to exploit Chelsea’s unfinished balance, or whether the missing pieces on both sides force the match into something less tidy and far more open.
