Tottenham boss Mauricio Pochettino says reaching the Champions League semifinals isn't his biggest career achievement.

Pochettino still rates keeping former club Espanyol in the Spanish top division as his greatest achievement in football.

He said, "It was very emotional, but I still think my first year in charge at Espanyol, to avoid relegation, is my biggest achievement.

"It is always going to be one of the most special things for me. I am an Espanyol fan, I love Espanyol and my emotional relationship with Espanyol will always be in my heart.

"But of course the Champions League is the best competition in the world, and to be in the semi-finals is one of the best."