"I can confirm he is going to start," Pochettino told reporters on Tuesday.
With just three wins in 10 Premier League games, Chelsea are in 11th place, 14 points behind leaders Tottenham Hotspur.
"To go through the competition (League Cup) is important, then go to Tottenham and receive Manchester City to get momentum."
Pochettino takes Chelsea to face his old club Spurs in the league on Monday but the Argentine won't let that influence his team selection for the League Cup game on Wednesday.
The five-time League Cup winners beat AFC Wimbledon and Brighton & Hove Albion in the previous rounds.
Persons:
Chelsea's Reece James, Matthew Childs, Reece James, Mauricio Pochettino, Chelsea's, Pochettino, Trevor Stynes, Ken Ferris
Organizations:
Soccer Football, Premier League, Chelsea, Brentford, Blackburn Rovers, Wednesday's League, Liverpool, Stamford Bridge, Tottenham Hotspur, Tottenham, Manchester City, Spurs, Argentine, League, AFC Wimbledon, Brighton & Hove Albion, Thomson
Locations:
Stamford, London, Britain, Chelsea