I think there are always several choices for an award winner. It is hard to determine the best coach. If you go just by the teams performance you probably need to take the points scored and that would be Pep as his team won the league. Or are you going per team development? Then yu could take a manager who saved a team from relegation.

Klopp is without a doubt one of the best maangers on this planet, but there are probably a lot of maangers on his level which is why I think such trophies are hard to distribute.