Thomas Partey
Arsenal have lost just three league matches all season. Partey was missing for two of them and was substituted at 0-0 in the 1-0 loss at Everton.
That just shows the importance he brings to Arteta's side. Jorginho is an experienced backup but isn't at the level of the Ghana star.
Martin Odegaard
Skipper Odegaard is labelled by some as the best player in the league this season. He is contributing regularly in terms of goals and assists and his leadership is instrumental to this team.
Fabio Vieira has shown glimpses of quality in his debut campaign. However, he wouldn't be able to fill the void left if Odegaard was absent.
Bukayo Saka
Arsenal have seen their attacking options increase in recent months. Leandro Trossard joined in January, while Emile Smith Rowe and Gabriel Jesus are back fit.
But none of them are comfortable playing off the right. Saka has made that position his own and is irreplaceable for Arteta.
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