Spurs are into the quarterfinals after last night's 6-1 win.
Pochettino said: “I'm so happy because the job is done, we are in the quarter-finals and that was our objective.
"I'm happy for different players, for Fernando Llorente with his hat-trick and Kyle Walker-Peters because he scored, and I think the performance was good. The first half was so difficult, it's so difficult to stop and start and be focused on the game but in the end I'm happy with the result and now we're in the quarter-finals.
"The first half was so difficult to maintain the focus because of a lot of controversial decisions from the VAR but in the end I'm happy, in the second half we were focused on playing football and then we fully deserved it after the performance."