Cape Town - Ronald Koeman was furious after Everton's 2-1 loss to Leicester in their FA Cup Third Round clash as he admitted his players need a wake-up call and the club needs to strengthen heavily.
Romelo Lukaku's 63rd minute goal at Goodison Park was cancelled out by two quick-fire Ahmed Musa strikes in the 66th and 71st minutes.
After the match, a massively disappointed Koeman said that in order for the Toffees to improve they all need to be on the same page.
He said: "I know what is needed to change.
"If everybody opened his eyes maybe we will get further in our improvement - because that is what this team needs."
He added that for the club to reach its goals, then they need to match the quality of their players with that level of expectation.
He explained: "I have that in mind and the board knows because we speak together about what we and the team needs and that is the job of [director of football] Steve Walsh.
"I hope everybody realises what the team needs to get results that are the expectation of this football club.
"I can explain more but I don't like to because that's really talks we need to do [internally]."
Koeman added that his team lost focus after scoring as they succumbed to a quick turn-around.
"It is not bad luck," he said. "We did it ourselves and it was just unbelievable how we dropped back.
"It was a lack of concentration at 1-0. I just can't see how they score the goal to make it 1-1. No pressing on the ball, a pass inside Seamus Coleman and Musa is faster - three defenders for us and it is 1-1.
"If you play like we did at 1-0 you ask for goals against. That is not the way you need to play at 1-0."