Former Chelsea striker Tony Cascarino thinks that the Blues should aim for Monaco wonder kid Kylian Mbappe as a replacement four outbound Diego Costa.

The Blues are currently looking to sign their former striker Romelu Lukaku for £80m from Everton, but Cascarino thinks that a deal for Mbappe would benefit the club more in the long term.

"I'd go straight in for Kylian Mbappe at Monaco," Cascarino told FourFourTwo. "You might end up spending £50m more, but you have potentially the best player in world football.

"Yes, it would cost in excess of £100m, but Chelsea are one of the few clubs who could do that.

"The only thing I'd wonder about is that he's a teenager, but he's the most dangerous striker there is."