Jose Mourinho has told World Cup hopeful Joe Cole that he faces a fight to secure a place in the Chelsea side.
Cole was on tour with England this summer
The Blues boss has a wealth of talent in midfield, including Damien Duff and Arjen Robben, with further signings expected to arrive soon.
"It's very difficult to play with Cole, Duff and Robben at the same time," Mourinho told the Chelsea magazine.
"But to keep the shape of the team, only two of these three players will play. We need that competition."
Looking ahead to the new Premiership season, the Portuguese boss said Chelsea's rivals will have to improve considerably if they are going to wrest the title from the Stamford Bridge club.
"This season other teams know how strong we are and they have to improve. If they are the same then they have no chance," he said.
"We have to show the rest of the Premiership that they cannot win at Stamford Bridge. Every fortnight must be three points, three points, three points."
"At the start of the season, I wanted to win everything. I'm frustrated because we did not win everything last season.
"I don't want people here to remember me as the manager who won the Premiership after 50 years and then had five more seasons of resting on that."
Mourinho also added that he was left bemused following the lap of honour by third-placed Manchester United at the end of the last Premiership season.
"I saw the players and manager after their last home game go for a lap of honour after losing to us.
"If they had done that in Portugal they would have had bottles thrown at them," said Mourinho.