The striker moved to White Hart Lane in a £26 million move last summer but failed to impress with just six goals in 28 Premier League outings.
Townsend, meanwhile, is believed to be a target for Southampton as Tottenham continue to hold an interest in Morgan Schneiderlin but Pochettino insists he is not looking to sell either player.
"Soldado is here, I never talk about any player rumours," Pochettino told reporters.
"He is in my plans. For the future? Yes. Yes. We've only had two games in the Premier League and one in the Europa League.
"I believe in all the squad. It is important you know I can only pick 11."
A neck injury will keep Soldado out of Thursday's Europa League play-off second-leg clash with AEL Limassol, but Townsend could be given the chance to impress.
"He is in my plans," Pochettino said of the 23-year-old. "It is impossible you play or have in the squad only 11 players - you need 24 or 25 players.
"I think we have to play a lot of games and it is possible you play tomorrow, then don't play in the next Premier League game, but the most important thing is understanding that we need to choose for the games.
"It is only 11 in each game after that another three impact players come in. We have an unbelievable squad and my job is not only to put my philosophy in the club or on the pitch on how we need to play, but I need choice and that is my job."