Jenas signed a new five-year contract with Spurs on Wednesday.
Jol told the club’s official website: “JJ has made a big contribution over the last two seasons and he is improving as a player all the time. His goals from midfield are a vital ingredient for us and he is already off the mark this season.
“I am delighted he has committed his future to the club because JJ has so much talent and is such a positive player.
“He always wants to learn and that is the right mentality to have, he wants to prove that he is a top player and the sky is the limit for him.”
