Luiz was subbed out of Gunners last match as Leicester City denied Mikel Arteta and his men of all points in the game.
Having managed to form a strong defense partnership with fellow country man; Gabriel Magalhaes, Luiz has since the start of the season been a top performer in Arsenal’s squad.
The Brazilian was seen racing back to defend an attack before pulling up without any player around him.
Although he was iced upon substitution but it’s disclosed that his injury needs proper attention and it’s yet to be revealed how long he will be out.
Gunners are nervous considering their matches ahead and the need to have Gabriel and David at the back.
With the current state of things at Arsenal, Arteta might be considering a defensive rethink.
Pablo Mari is expected to make a return soon while Callum Chambers has resumed training ahead of returning to full fitness.
Arsenal would be facing Dundalk on this week’s Europa League game and William Saliba who could have replaced Luiz isn’t registered for the League.
Mustafi seems to be the only option available to Arteta after his last leak caused Leicester’s victory.