Pritchard signed a two-year, $44.2 million contract extension with the Celtics on Tuesday, Shams Charania of ESPN reports.
Awaka (knee) didn't practice Tuesday, per K.C. Johnson of Chicago Sports Network.
Collins (toe) is progressing in his recovery but has been ruled out for Wednesday's preseason meeting with the Bucks, K.C. Johnson of Chicago Sports Network reports.
Okoro (undisclosed) didn't participate in Tuesday's practice, K.C. Johnson of Chicago Sports Network reports.
Miller logged 26 points (11-14 FG, 4-6 3Pt), seven rebounds and two assists in 22 minutes during Sunday's 133-128 preseason loss to the Nuggets.
Okoro will start in Sunday's preseason game against Denver.
Awaka will come off the bench during Sunday's preseason game against the Nuggets.
Smith (foot) is available and starting in Sunday's preseason game versus Denver.
Powell is not in the starting lineup for Sunday's preseason game against the Nuggets.
Buzelis (ankle) will start Sunday's preseason game against the Nuggets.
