Chelsea boss Frank Lampard has warned the board they must buy this summer.

Lampard has also warned his younger players that they need to show more of their potential or risk being axed at the end of the season.

“There is a reason why we are where we are at the moment," Lampard said.

“We have not challenged in the Premier League for a couple of years.

“We have to fight and work as hard as we can on the training pitch and in games to close that gap.

“Come the summer, of course as a club we want to move forward and make some decisions.

“We are certainly on the same page here when I speak with the board.

“People say, 'you are Chelsea, you should not be happy with fourth'. The Premier League has changed. It's not like that any more."