The Gunners need victory over Newcastle on Saturday to return to the Premier League summit, though having played one game more than current leaders Manchester City.
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Saliba told Men in Blazers: "Even when I sleep, I think about it, when you are close to achieving your dream in the Champions League and Premier League.
"I haven’t won anything big in my career yet but I will give everything to win the title and the Champions League.
"The most difficult is the first one and then you have won it I am sure it is easier.
"The last few games have not been great but we learn and move on to this weekend’s game to change everything."