Tottenham forward Won Heung-min Son has expressed his dissatisfaction following a piss-poor performance against Leicester City.
The South Korean international described his team's performance as "disappointing" having conceded four goals after going in front first.
Bentancur slotted home a loose ball from a corner at close range before Nampalys Mendy pulled Leicester level with a goal-of-the-season contender to turn the game on its head.
Two minutes later, James Maddison slotted them in front before a fine Kelechi Iheanacho strike on the stroke of half-time gave Leicester a comfortable lead.
The hosts fine afternoon was rounded off with Harvey Barnes' pinpoint finish into the bottom corner to decimate Spurs at the King Power Stadium.
Speaking to BBC Match of the Day, Son said: “We started quite well and created chances.
"After it was 1-1 we conceded a quick second goal and then it was open.
"It was a difficult game then.
"Leicester were so clinical, they almost scored every chance.
"It’s a very disappointing result."
He bemoaned the painful defeat without being economical with his words but went on to say the loss will serve as a lesson to the team.
“I think it’s very sad," he said. "We knew it was going to be a really hard game.
"In the Premier League it’s never an easy game.
"It showed the Premier League has a high level.
"I don’t know what I can say, it’s very disappointing.
"I don’t think [it was complacency].
"We came with a good feeling after beating City.
"The first minute we were really on it.
"We should be ready and learn something.
"Today should be a big lesson for us."
Spurs defeat comes on the back of their impressive win against Manchester City last week.
They were at their best despite the absence of manager Antonio Conte in the dugout.
Harry Kane scored the winning goal in the clash to become the club's highest goalscorer and close in on Alan Shearer who's Premier League all-time highest goalscorer.