Which team had the most successful season in the concluded English premiership.

What a season!what a tough leagues.
As we all know that English premiership this season had the most successful and high class coaches of all time compete with their team in the league.
Chelsea won the league.

Arsenal won the Fa cup but did not qualify for the champions league.

Tottenham has being consistent for 2 season now,qualifying for the champions league.

Man Utd despite coming 6th, won the Europa league which gave them the automatic tickets to compete in the champions league next season, also wining the league cups and community shields cup
So which club was most successful this season ??