The pair missed the trip to Burton Albion with thigh and knee injuries respectively. Gale’s injury, in particular, could have been more severe.
Eoin Toal and Josh Sheehan are back available after returning from international duty with Northern Ireland and Wales respectively.
Kyle Dempsey got an hour under his belt for the B Team as the midfielder continues to build up his sharpness.
“Toaly and Josh are back,” Schumacher told a press conference. “Obviously, they didn’t feature on Monday night for their respective countries so they’re fresh.
“They got back to training on Tuesday, so they’ve been good the last two days. It’s good to have them back.
“Ethan is probably going to be four weeks. A bit of a thigh strain, not a mad serious one. It’s something that he’s done before so he knows how to manage it. As I said, it’s a four-week one so it’s not going to be the end of the world.
“The same with Thierry Gale, he had a little bit of ligament damage. He’s been to see the specialist and, again, we think we’ll get him back in the middle of November which is positive because with those types of injuries it could be a lot worse.”
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Toal was an unused substitute in both games during the international break, while Sheehan came off the bench against England but was not used on Monday.
When asked if they come straight back into contention for Huddersfield, the head coach replied: “Of course, they’re two good players.
“Toaly obviously started the season and did really well until he went away on his international break.
“Josh has been a regular in the team, in and out with the rest of the midfield players, so of course they come into our thoughts.
“They’ll come back into the squad because why wouldn’t you put two internationals back into your squad? They’re really good players obviously.”
Aaron Morley and Ibrahim Cissoko came into the side at Burton in the absence of Erhahon and Gale, and Schumacher insists that injuries are a chance for others in the squad to step up and show what they can do.
“Whenever you have any injury to any position in the squad, the lads who have been waiting patiently or haven’t played – it’s an opportunity to stake a claim, that’s why you have a squad,” he added.
“That’s why you have to keep going over it with the players, that they will get opportunities when they least expect them. And when you do get them, you’ve got to be ready to take them.”