1. Pep Guardiola

Teams managed this decade - Barcelona, Bayern Munich, Manchester City
Never in doubt, was it? As impressive as Jurgen Klopp has been across two leagues with a lesser budget than that of our number one pick, no one comes close to matching the beautiful style of football and the unrivalled resume of Pep Guardiola this decade.
With one Champions League title and six league titles across three major leagues, Guardiola has been the most dominant manager in world football this decade. Starting off with his Barcelona team who won the treble in 2008-09, the Spaniard managed to best Sir Alex Ferguson again in the Champions League final of 2011, where he secured his second title.
After three seasons at Barcelona where he assembled what is quite possibly the greatest club side in the history of football, Pep left Spain for the German heavyweights Bayern Munich. In Germany, Pep re-established the Bayern hegemony in the Bundesliga, winning the league all three seasons he was in charge and accomplishing the double twice.
He smashed Bundesliga records as his Bayern squad in 2013-14 wrapped up the league with seven games to go, and no competitor came close to the Bavarian team in his time at the club. His failure to lead his team to the Champions League title is a blemish on an otherwise perfect record in Germany.
After three seasons, Guardiola turned his eyes to England as he looked to conquer the Premier League. After a trophyless first season, the former Barcelona player vowed to improve and he smashed the Premier League record for most points, as his Manchester City team gathered 100 points in the 2017-18 season as they captured their first PL title under Pep.
The following season, they completed an unprecedented domestic treble as the Cityzens won the league title, FA Cup, and the English Football league cup. This season, Guardiola will be eyeing the Champions League as he continues his quest for the trophy after his Barcelona departure.
The Spaniard has a lot of detractors - those who say that he only takes over teams with an unlimited budget and an already talented squad, citing that he is unable to do what the likes of Mourinho and Klopp have done with teams who were not very successful when they took over. To an extent, that argument may hold some weight.
However, nobody can take away the tiki-taka philosophy which the manager has ingrained in all the teams he has been to, and the impact he has had on the league and the players whom he made the most dominant in the country. In this list, there is no argument that Pep Guardiola deserves to be number one.