Chelsea striker Alvaro Morata has insisted that he is fully fit following criticism from fans who suggested that he was overexagerrating a back injury.

Morata's wife Alice Campello posted a video on Instagram on Sunday showing the pair dancing together, despite Morata having missed the club's last four games through injury.

Fans took to Instagram to question why Morata was able to perform the lifts and carries shown in the video with his apparent injury, but the Spaniard has hit back at his critics and revealed that he is fit for this evening's Premier League clash with West Bromwich Albion.

"It's [an] old video. I'm not injured, I'm OK for the game tomorrow. A lot of critics now.. but no problem for me!" Morata wrote in reply to a comment on Instagram.

Morata has scored 12 goals in 30 appearances for Chelsea since joining for a club-record fee last summer.