There is another quality player who is still available, a certain Phil Kessel. He had a respectable season with the Arizona Coyotes in 2021-2022 with 52 points in 82 games, but only scored eight goals.
Kessel made $8 million in 2021-2022, so it would be quite surprising if he demanded that much money. On the other hand, if he were to take a significant pay cut to join the Oilers, he could continue his incredible streak of consecutive games played and he would bring depth to the Oilers' potent offense.