Chelsea chief Peter Kenyon accepts there were "issues" that affected last season's campaign.

Kenyon said: "I'm not saying there weren't issues, there were various issues as there are at every club.

"That has been addressed and I'm confident about next season and that aspect of Chelsea. I don't think anyone wants a repeat of last year."

Kenyon believes Andriy Shevchenko and Michael Ballack will shine this season after struggling following their high-profile arrivals a year ago, with hopes of the pair emulating the likes of Thierry Henry and Didier Drogba in taking time to settle into English football.

"Andriy and Mike came in on four-year contracts, not for a year and then if you do okay we'll resign you," Kenyon added. "It's a four-year commitment to add value to the squad over a period of time.

"Both of those players know they have got much more to achieve and want to achieve much more.

"I remember having a similar conversation this time last year. It can be easy to underestimate the settling in to English football."