Mauricio Pochettino has worked wonders at Tottenham since joining from Southampton in 2014.
After guiding the club to an unprecedented 3-0 win over Borussia Dortmund in the Champions League in midweek, it seems the Spurs boss can do no wrong. He's taking the club to heights most supporters haven't seen. And Tottenham fans love him.
Jurgen Klopp and Pep Guardiola are usually hailed as the best in the country, but that's not fair on Spurs' boss - and here's why.
4. His Trust in Youth
Mauricio Pochettino has injected a great amount of trust into the young players who have come through the ranks.
Not only has this had the effect of improving the academy, but it has helped create a hungry and high spirited side which has proved pivotal to Tottenham's success.
Taking a gamble on youth has increased the depth of the team and provided a crucial chance to young players who are often neglected in other clubs.
3. Quality Football
We can't ignore the change in footballing quality that Mauricio Pochettino has installed since he joined Tottenham in 2014.
He has installed a high press and fast paced attacking football that has become a consistent trait of the Spurs side.
It's changed the face of Tottenham Hotspur, who now are a team that is watched by everyone with enjoyment. Implementing a young squad has helped fuel the energy and it's got Spurs competing against the world's best teams.
2. Belief & Man Management
Pochettino deserves huge credit for improving individual players rather than simply paying to replace them.
He took over a squad in 2014 who were lacking in confidence, morale and quality, and there were a number of 'bad eggs' in the ranks too. But by dedicating time to understanding each player and installing belief, he has transformed the likes of Harry Kane, Jan Vertonghen, Danny Rose and Christian Eriksen into the Premier League's best.
On a budget, he has invested in Eric Dier, Kieran Trippier and Dele Alli, and they've each proved to be a fundamental part of England's recent World Cup success.
1. Net Spend
Tottenham Hotspur have one of the Premier League's lowest net spends since Poch's appointment.
Daniel Levy's sell-to-buy policy has shown to have no impact on Pochettino's success with the club, and he is one of the few managers who has produced a dominant force across all competitions with a limited amount of funds.
If Pochettino can transform Tottenham the way he has done, who knows what he could achieve with backing.