England duo Jonny May and Jack Nowell are both expected to recover from hamstring injuries in time to face New Zealand on Saturday.
The news will come as a major boost to the squad as they look to reach the World Cup final for the first time since 2007.
May scored two tries in the record-equalling 40-16 quarter-final victory over Australia in Oita on Saturday, but reported a twinge which will be assessed again during the week.
Nowell missed the quarter-final with a similar injury after making his initial comeback from an ankle knock in what turned out to be England’s final pool game against Argentina a fortnight ago.
"It's fantastic where we are, all 31 being available for selection at the end of the week," assistant coach Neil Hatley said.
"Jonny's bouncing around this morning. He has a small twinge and we'll assess where he is a little bit later today.
"He's in really good spirits, moving well, and we expect Jack to be fit for selection as well."
Hatley praised the performance of prop Mako Vunipola in what was a very physical clash against the Wallabies.
Vunipola, who missed the end of last season after suffering a hamstring injury in the Champions Cup final victory over Leinster, has looked impressive since his return to the England fold.
"He continues to go from strength to strength," said Hatley. "And he needs to because Ellis Genge and Joe Marler have been ferocious in training and everyone's putting the pressure on.
"We've talked before about this team of 31 and everyone's doing their part but Mako, when he plays well like he did, is a real force.
"Without sounding massively blase about it, I wasn't surprised at the performance he turned in, but I can understand why people outside of our group would look at it and go 'that's a hell of a performance'."
England head coach Eddie Jones will name his team to face the All Blacks on Thursday.
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