The pair's first arc of the new Marvel NOW! title will be followed by a second illustrated by comics legend Walt Simonson.
"I don't know yet," Waid told Digital Spy when asked about the return of Yu.
He added that working with Simonson had been "phenomenal".
The three-issue storyline was a collaborative process, with the artist offering his own suggestions for the tale. "You don't say no to someone of Walt's stature and prominence," said Waid.
"I've known him forever, but we've never collaborated before. It's something I've been wanting to do since I was a little boy, so it's been like a dream come true."
Waid and Simonson's arc will launch in April's Indestructible Hulk #6, which features a team-up with Thor.