All three returned to training this week after injury.
Michael is available for the first time this season after damaging his ankle on August 10, the day before our opener at Sunderland, while fellow central defender Younes is back from a hamstring strain suffered against Everton on August 14.
Aaron is approaching match fitness after undergoing minor knee surgery in May.
"Michael is back in the squad and that's a big plus for us alongside Younes, who has impressed everyone here but unfortunately had to go off in the Everton game," repored Chris on Friday.
"Aaron is very, very close. We're yet to make a decision on him but it's great that he's there or thereabouts."
Anthony Gardner is the only addition to the injury list with Darren Bent (thigh), Ledley King and Benoit Assou-Ekotto (both knee) still out.
Chris added: "Anthony's a blow but compensated for by the return of Michael and Younes.
"Benoit will train on Monday, so we're far more optimistic on things."
Michael Dawson and Younes Kaboul are back in the squad to face Fulham on Saturday with a late decision to be made on Aaron Lennon's possible return.