Chelsea manager Jose Mourinho says this season's Premier League campaign will be the most competitive he has experienced.
The Portuguese believes that a number of non-title contenders teams will cause major upsets during the campaign.
He says Yohan Cabaye, Georginio Wijnaldum and Max Grade who signed for Crystal Palace, Newcastle United and Bournemouth respectively show that winning the Premier League will be a tough job for his players.
"There will be more times when the non-title contenders win matches against the title contenders," Mourinho told the BBC.
"It's also difficult because they have players who could play in our teams - Cabaye could play for Chelsea, Wijnaldum could play for Chelsea, Gradel could play for Chelsea.
"You have a minimum of five title contenders and the other teams get stronger and stronger."