He said to me, "You can now." Change the narration.

He told me that you could go now.

He told me that I could go then.

He told me that he can go then.

None of these

The correct narration is: "He told me that I could go then."

In reported speech, "you" changes to "I" and "can" changes to "could," with "now" changing to "then" to reflect the shift in time.