Arsenal defender Luiz, 33, is out of contract at the end of this season.
And Gomes thinks he should return to Benfica to see out his playing days.
"Let's see what happens," Gomes told Goal.
"I remember that when he left Benfica he was very well adapted to Portugal in terms of his career on the pitch and his social life off the pitch. He was like a Portuguese already in terms of his way of life and culture.
"He struggled a little bit to leave because he was doing very well and was very well settled here. But the offer that he received he couldn't refuse.
"But he always said that one day he wanted to return. I don't know if it will be possible or not, but I would love it to happen."
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