Atletico Madrid defeated Real Madrid on Wednesday to win the Uefa Super Cup
Atletico Madrid have been fined just over £40,000 for signing a player, who has not been named, on a deal that allowed third-party ownership.
Fifa bans clubs and players from entering into economic rights agreements with third-party investors.
Atletico have previously been banned from registering players for two transfer windows for breaching rules over the signing of minors.
The Europa League champions were also fined £439,873 at the time.
Source: bbc.com