Spurs host the second-leg on their round of 16 tie with the scores locked at 2-2.
Pochettino said: “You need to keep focused, and try to avoid all the problems that can arrive.
“You need to keep winning, you cannot be complacent and you need to be careful when something happens around the team, or inside the team, to try to avoid that developing into a problem.
“I think for me we are going to enjoy the game. We deserve to be there.
“Enjoy, and not put drama on this game. It's only to try to enjoy and be free and try to perform in the best way."