Chelsea boss Graham Potter admits Kepa Arrizabalaga is a big risk at missing the World Cup.

Potter says the Spain goalkeeper's injury recovery isn't going well.

He said: "He's still unavailable, [on the World Cup?] we will see.

"We will take it day by day. It is a tear in his plantar fascia (tissue connecting heel bone with toes). It's about how he responds. How he responds to pain. How comfortable he feels.

"At the moment, not so positive."