Arsenal have expressed interest in signing centre-back Evan Ndicka from Eintracht Frankfurt, according to reports.
The Gunners currently sit top of the Premier League, with 27 points from their opening 10 games this season.
Ben White has started every game at right-back, meanwhile.
Arsenal do have options in reserve should either Saliba or Gabriel miss a match. White can come back into the centre of defence, with Rob Holding, Takehiro Tomiyasu and even Granit Xhaka capable of playing there.
However, in Gabriel's case, they do not have a natural left-footed centre-back to replace him. But that could soon be about to change.
Arsenal interested in Evan Ndicka
The 23-year-old is comfortable on the left side of defence. In addition, at 6ft 4in tall, he is certainly an imposing figure.
Ndicka is French, and has been capped at all youth levels, but is yet to make his senior debut for the national team.
His contract with Frankfurt expires at the end of the season, with the player free to discuss a pre-contract with European clubs in January.
Calciomercato claim that the reigning Europa League champions have asked Italian clubs to part with between €8-12 million to sign Ndicka in January, given his contract situation.
This could certainly appeal to Arsenal, although they could wait until the summer, with Frankfurt powerless to stop their player's departure unless they can agree on a new deal.
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