The midfielder has been unavailable for selection in Stale Solbakken's side after suffering a hamstring injury during Wolves' 3-1 win over Barnsley three weeks ago.
"I'm feeling good," Henry told the club's official website. "It was a slight tweak of the hamstring but thankfully nothing too serious.
"I have missed a couple of games but am back now and ready to be available for Sunday. Training yesterday was good although the other lads might say I wasn't so good! It was just nice to be back out there even though I've not been out for long."
Wolves have picked up just four points in their first four Championship outings.