On 23 September 2014, Morrison completed a three-month loan move, until 26 December 2014, to Championship side Cardiff City.

He was named Man of the Match by WalesOnline on his first and only start for the club, against Blackpool, on 14 October 2014.
While still on loan with Cardiff City, West Ham United placed Morrison on the transfer list making him available for transfer for a "nominal fee" in the January 2015 transfer window.
In December 2014, Morrison returned early to West Ham United from his loan, after Cardiff City manager Russell Slade said Morrison had no future at the club.
He had played seven games, one start and six as a substitute, without scoring.
On 23 September 2014, Morrison completed a three-month loan move, until 26 December 2014, to Championship side Cardiff City.
He was named Man of the Match by WalesOnline on his first and only start for the club, against Blackpool, on 14 October 2014. While still on loan with Cardiff City, West Ham United placed Morrison on the transfer list making him available for transfer for a "nominal fee" in the January 2015 transfer window. In December 2014, Morrison returned early to West Ham United from his loan, after Cardiff City manager Russell Slade said Morrison had no future at the club. He had played seven games, one start and six as a substitute, without scoring.
Ravel Morrison