Everton manager Ronald Koeman says his players are only at 70 percent fitness ahead of their season-opening clash with Tottenham on Saturday.

The Dutchman, who left Southampton in June to become Toffees boss, added that at his previous club "it was 100 percent."

"Of course, it's always nice to start the season, but we are not at the level we need to be. Not in terms of players' physical states," Koeman said:

"Because I think we are, in terms of physical state, 70 percent of what we need to be. We are working hard and we will improve. We need to improve."