Spanish giants Real Madrid and Atletico Madrid have been banned from registering players for the next two transfer windows.
They have been punished by world governing body Fifa for breaching rules over the transfer of minors - and Atletico say they will appeal.
The ban does not cover the current January transfer window.
Atletico were fined 900,000 Swiss francs (£622,000), while Real were told to pay 360,000 (£249,000).
"Our club is not in agreement with the sanction from international football's governing body and will study all the documentation we've received to present an appeal against the sanction," said an Atletico statement.
Real Madrid have yet to comment.
Barcelona were given the same penalty in April 2014 for also breaching rules on the transfer of under-18 players.
Their ban, which ended this month, did not stop the La Liga side from signing players.
They bought Arda Turan and Aleix Vidal in the summer of 2015, though both players were prevented from playing until the current window opened.
The next two transfer windows are July/August 2016 and January 2017.
Latest Stories
-
Presidents should have no business in pardoning people – Prof Abotsi
8 minutes -
Samuel Addo Otoo pops up for Ashanti Regional Minister
11 minutes -
Not every ministry needs a minister – Joyce Bawa
35 minutes -
Police shouldn’t wait for President’s directive to investigate election-related deaths – Kwaku Asare
1 hour -
Mahama was intentional in repairing ties with neighbouring countries – Barker-Vormawor
1 hour -
Mahama decouples Youth and Sports Ministry, to create Sports and Recreation Ministry
1 hour -
Mahama’s open endorsement of Bagbin needless – Rabi Salifu
2 hours -
Police station torched as Ejura youth clash with officers
2 hours -
If Ibrahim Traoré goes civilian, it may be because of Mahama’s inauguration – Prof Abotsi
3 hours -
Kwaku Asare welcomes Mahama’s reduction in Ministries but advocates legislative process to cement it
3 hours -
I’m concerned about failure to implement AWW report – Prof Abotsi
3 hours -
US returns $50m in alleged stolen funds to Nigeria
4 hours -
Mahama restructures Ministries, reduced from 30 to 23 – See full list
4 hours -
2 siblings die after being locked in water drum by 6-year-old sister
4 hours -
Mahama shouldn’t have openly directed Parliament to elect Speaker – Prof. Kwaku Asare
4 hours