Blackburn's David Bentley will be preferred to David Beckham, while Portsmouth's Glen Johnson looks likely to start at right-back ahead of Wes Brown.
Chelsea's Ashley Cole, despite being bothered by an ankle injury, looks likely to play at left-back, with club-mate Wayne Bridge or Blackburn's Stephen Warnock replacing him for the Trinidad match.
Capello looks likely to name Aston Villa's Gareth Barry as the last of his four 'triallist' captains when England travel to the West Indies on Sunday.
Chelsea skipper John Terry will wear the armband tonight for his last game of the season. Barry is the last of the four leaders to be tried out by Capello, the other two being Gerrard and Rio Ferdinand. The England coach will then decide on his permanent captain for next season's World Cup qualifying matches and have him in place for the August friendly against the Czech Republic.
Capello will allow most of the Chelsea and United players involved in Moscow a week ago to miss the trip to Trinidad but the Italian will ask for some representation from the two clubs, with Ferdinand being one more likely to travel.