Saliba was not selected for Arsenal's League Cup squad against Liverpool. Arteta said the French central defender still needs time to recover.
Holding and Gabriel teamed up with a central defender at Anfield, while Saliba is still waiting for his first appearance for Arsenal.
Arteta said: "Arsenal loaned Saliba to Saint-Etienne last season. It was a year of transition. For many reasons, it was not the transition period that Saliba needed in the end because he He has suffered many injuries and the Ligue 1 league has ended early. He has not experienced that transitional period."
"He needs a one-year transition period. We try to make the right decision for him and let him usher in the best transition period. In this way, we can have a player who belongs to the club in the future."
After the elimination of Liverpool, Arsenal will face Manchester City in the League Cup quarter-finals.