Everton boss Koeman described Tottenham as “maybe with Man City, the best football side in the Premier League”.
Regarding the disappointing performance his own side produced, the Dutchman suggested the Toffees had initially been a match for their opponents before rapidly suffering in terms of confidence when the goals went in.
“I think until we went 1-0 down, we did well,” he said.
“Then going 1-0 down broke our confidence a little bit. We had problems with the diamond in the Tottenham midfield.
— Ronald Koeman (@RonaldKoeman) September 9, 2017
“They scored the second goal before half-time and at half-time we tried to pick up the team. We changed, making two substitutions, and changed a little bit the positions in midfield, to have a better control.
“But if you go out of the dressing room and start how we did in second half… That was poor. There was a misunderstanding between Michael Keane and Jordan Pickford, and after that, the next situation was that we were 3-0 down.
“Then I understand how difficult football can be – one team is full of confidence at that time, we were without any confidence. Then you see the difference.”
Asked about Everton’s aspirations of joining Tottenham as a top-six club and what the game showed in terms of how far away they are, Koeman – who made a raft of signings over the summer – said: “If you look at the second half, we are really far away.
“If you look at the first 30 minutes, it is different. But the difference between Everton and Tottenham is that they have worked a long time together now with the same players and it is not realistic to expect that Everton already is at that level.
“If you think we need to be at that level, then it will be really difficult.”