Tottenham are the champions of this year's UEFA Europe League.
It was an all English team finals Wednesday night but the Spurs had the upper hand.
The two teams are occupying 16th and 17th positions on the EPL.
Manchester United goalkeeper, Onana's error led to the winning goal which came through Brennan Johnson in the 42nd minute.
That was the only goal of the game.
The win guarantees Tottenham a spot in next season Champions League.