Saliba, who has missed Arsenal's last two matches in all competitions with an ankle injury, returns for the clash to bolster a defence that is otherwise at full strength.
However, Odegaard's absence leaves Arsenal without their creative hub in midfield.
Arteta added that Riccardo Calafiori and Leandro Trossard "are a possibility, we will see tomorrow," while Gabriel Magalhaes, Declan Rice and Martin Zubimendi are all available.
Arsenal suffered the disappointment of a Champions League semi-final exit last season, ending their hopes of winning European club football's biggest prize for the first time.
"Yes, you learn about the things you did well. You learn about the things you can improve," Arteta said. "This is football and you have to show it tomorrow night.
"Champions League is about the day, and within that day, there are moments."
Arsenal's 2-1 victory over Mansfield at the weekend moved them into the FA Cup quarter-finals and led to talk about the elusive quadruple -- Champions League, Premier League, FA Cup and League Cup trophies in the same season.
Arsenal currently top the Premier League standings.
Asked whether he believes his side are ready to win major trophies this season, Arteta kept the focus narrow.
"I live in the present, and I prepare for everything that I expect, and I feel inspired to inspire those players to play the same way," he said. "This is football, there is so much to do."