Mikel Arteta is said to have misgivings over William Saliba's defending as the teenager looks set to leave Arsenal on another loan deal.
Saliba signed for Arsenal in a £27million deal last summer, but he was instantly loaned back to selling club Saint-Etienne to aid his development.
The French youngster endured an injury-hit 2019/20 campaign back at his former club, with the swift curtailment of the Ligue 1 season seeing the 19-year-old return to London Colney to train with the Gunners.
The centre-back wasn't eligible to play for his parent club in the latter part of last season after football returned from lockdown, but having been handed the No.4 shirt for the new campaign he was expected to play a part in Arteta's plans.
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