Roy Keane sends warning to Frank Lampard: 'Chelsea don’t give managers time'.

The lack of energy and determination in the side should be a real concern for the boss, the pundit adds.

"Frank will be concerned for what he saw today," ex-man United midfielder Roy Kean told Sky Sports. "Today you’re thinking with the attacking players, I thought they’d put up a performance, but there was a lack of energy.

"When you’re losing a game 3-0 and not putting a tackle in, it’s a huge concern. He’s got senior players out here, players who have won the World Cup, how they didn’t sort it out, making tackles, pulling people in, sitting in. That would be the big concern for me.

"Chelsea don’t give managers time. It’s in their DNA and history not to give them time."

According to the latest reports, Frank Lampard's role as the Chelsea manager is already under serious threat. The club have already started looking at potential replacements, although none of the coaches has yet emerged as a frontrunner for the job.