Pochettino said: "There is no buy-out clause in my contract, I will stay here next season".
Kieran Trippier sustained concussion against Manchester United last weekend and is unavailable, while Kyle Walker has a minor ankle injury and will also miss out.
Spurs travel to last season's champions Leicester City on Thursday for their penultimate game of the season.
"It's a special bond and I don't think you always get that at clubs, that's why we've got to hold onto that, make that motivate us to hopefully be out there next year at Wembley lifting a Premier League together".
Spurs finished second behind Chelsea in the league to qualify for the Europe's elite competition but Pochettino says it is not enough to attract "top players" and will instead look to add younger players to the squad.
Leicester City have managed to mount a very appreciable comeback in the Premier League to find themselves 11th on the Premier League table.
Despite the fact that the "foxes" spent most of the season as an English champion at the bottom of the standings, risking being in the relegation zone, the results of the spring part made it possible to get out of the situation. "We had some problems in October and November where we dropped a lot of points in the Premier League, and then it was hard to catch Chelsea in the end".More news: Dominic Thiem dumps Nadal out of Italian Open
More news: Trump, dogged by questions at home, makes first trip abroad
More news: McCain: US should expel Turkey envoy over bodyguard violence
Alli, 21, cost just £5m when Spurs signed him from MK Dons in February 2015 and has since blossomed into one of England's best players. "That is why they won in the end".
"Every season we try to improve, and next season and the season after when we move to the new stadium we want to not only try to keep the performance but also win trophies. It's okay but maybe he is not at his best to play 90 minutes", Pochettino said.
"And if that's going to be at Tottenham or if I have to leave it's just important I enjoy the journey and don't get too anxious about how it's going to end".
The Tottenham manager said in a press conference: "After Sunday he needs to see the specialist".
Spurs fans will be desperate to see Alli stay and help the club go one further than their last two Prem finishes of third and second.
Yet Mauricio Pochettino will know the importance of finishing the season on a high in their two remaining away games.