The 22 year-old striker Carroll has appeared three times for England and scored one goal. He is contention to start for his country alongside Manchester United forward Wayne Rooney.
Downing is looking to add to his 24 caps and could start on the left side of Capello’s midfield. He is in good form for Liverpool since joining the club in the summer from Aston Villa. He has appeared in eight games and provides a genuine threat to opposing fullbacks.
Midfielder Steve Gerrard was sensibly omitted by Capello. The Liverpool captain only recently returned to action after a six-month layoff to cure a persistent groin problem. He has played a part of only three games and has yet to appear in the starting 11 for the club.
Liverpool's other England international, Glen Johnson, is out due to a hamstring strain.
England will qualify for next summer's European Championship with a win or a draw at Montenegro.
The full England Squad is:
Goalkeepers
Scott Carson, Joe Hart, David Stockdale
Defenders
Leighton Baines, Gary Cahill, Ashley Cole, Phil Jagielka, Phil Jones, Micah Richards, John Terry, Kyle Walker
Midfielders
Gareth Barry, Stewart Downing, Adam Johnson, Frank Lampard, James Milner, Scott Parker, Theo Walcott, Ashley Young
Forwards
Darren Bent, Andy Carroll, Wayne Rooney, Danny Welbeck, Bobby Zamora
