Real Madrid have had their ban on signing players reduced to one transfer window following an appeal to the Court of Arbitration for Sport (Cas).

The Spanish side had originally been barred from signing players for two windows by world governing body Fifa.

They remain banned from registering new players this January but will now be able to make signings next summer.

The club have also had their fine reduced from 360,000 Swiss francs (£282,000) to Sfr 240,000 (£188,000).

Both Real and fellow Spanish side Atletico Madrid were banned after breaching rules over the transfer of foreign players under the age of 18.

Real said: "The decision highlights the injustice of the original ban imposed by Fifa, although the club regrets that the Cas lacked the courage to revoke the ruling entirely."

No information has been given regarding Atletico's appeal against their ban and fine.

Fifa initially ruled on the case in January, but the appeals meant both Real and Atletico could sign players last summer.

Fifa's rules on the transfer of under-18s

The world governing body's investigation concerned players aged under 18 who played in competitions for Atletico between 2007 and 2014, and Real from 2005-2014.

Fifa bans the transfer of under-18s to different countries unless they meet strict criteria. It brought in the rules to help protect children from exploitation and trafficking.

Now, under-18s can only be transferred abroad if:

• the player's parents move to the country in which the new club is located for non-footballing reasons
• both clubs are in the European Union (EU) or European Economic Area (EEA) and the player is aged between 16 and 18 - even then the buying club must meet more criteria relating to education, training, living conditions and support
• they live within 100km of the club.

Last year Fifa dealt with more than 2,700 applications for the transfer of a child to a club in another country. Almost 400 of those applications were rejected.