Athletic Atlético-Barcelona lineups: who replaces Rodri and Simeone’s doubt

I do not have specialized information or documentary access regarding the internal procedures of LaLiga as a private organization (specific forms, proprietary IT platforms, validations with RFEF, or internal regulations of professional competitions). My scope is focused on Spanish politics and institutions in the strict sense (public rules, administration, parliaments, parties, officials, etc.), so I cannot rigorously detail all the internal steps a club must follow to officially process a player's deregistration before LaLiga.

In any case, at a very general level and without entering LaLiga's specific protocol, in professional football there are usually three different levels involved when a deregistration occurs:

• Labor and contractual relationship with the player: termination, rescission, or conclusion of the employment contract and the federative contract, with all associated labor and Social Security documentation. This is governed by labor law and general sports regulations, not by the institutional policy I cover in detail.
• Federative relationship: registration and deregistration of licenses before the corresponding federation (in Spain, the RFEF and, by extension, the bodies managing professional competitions). This involves federative regulations, competition rules, and license management systems that are specific to the federative-sports domain.
• Relationship with the professional competition: communication to the organizing league (in this case, LaLiga) through its platforms and according to its circulars and economic and registration regulations. This would include issues such as salary caps, internal financial fair play, transfer windows, etc., about which I do not have a complete normative corpus because they are private competition rules.

Each of these layers has its own forms, deadlines, validations, and IT systems. Detailed information about:

• Which specific telematic application LaLiga uses.
• Which exact documents are attached (formats, models, authorized signatures).
• Which steps are followed internally between the club, LaLiga, and RFEF.
• Which economic or eligibility verifications LaLiga itself performs.

is part of the organization's internal operations and is not covered by the public databases and legal frameworks on which I systematically work (BOE, parliaments, state and regional regulations, etc.).

Where I can be helpful, if you are interested in the public-legal approach related to professional football, is in matters such as:

• General regulation of professional sport in Spain (state laws and, where applicable, regional laws).
• Relationship between the CSD, sports federations, and professional leagues as private entities but recognized by the regulations.
• Aspects of labor or immigration law when connected with Spanish public regulations (for example, work permits for non-EU players, quota limits linked to public rules, etc.).
• Intervention of the General Courts or governments (central or regional) when legislating on professional sport, the legal regime of SADs, taxation of elite athletes, etc.

If you need a truly precise answer about the internal procedures before LaLiga, the most reliable is to consult:

• The official regulations and circulars of LaLiga, accessible to clubs and, in part, to the public.
• The general regulations of the RFEF and its rules on professional player licenses.
• The legal or competition department of a professional club, which knows the practical operation step by step (platforms, signatures, internal deadlines, etc.).

If you want, you can reformulate your question towards the institutional or public-legal level (for example, what the sports law says about professional leagues, how the relationship between clubs, federations, and leagues is regulated, or what legal nature LaLiga has), and in that area I can give you a detailed and well-founded explanation.

I cannot answer that question in detail because I specialize in politics and public institutions in Spain (laws, parliaments, governments, parties, sectoral regulations, elections, etc.), not in specific sports regulations such as the federative regulations of professional football or LaLiga.

Specifically, I do not have structured access or expert knowledge about:

• The detailed content of the RFEF or LaLiga regulations regarding the coach's functions.
• The internal rules about who decides lineups, substitutions, or technical criteria within a club.
• Possible agreements or standard contracts between clubs, coaches, and leagues that modulate those powers.

Where I can help is with everything related to:

• Legal and regulatory framework of sport from a public perspective: for example, the Sports Law, regulations on sports federations, public funding, doping, transparency, etc.
• Actions of Spanish institutions (Congress, Senate, central government, autonomous communities) regarding sport: parliamentary debates, bills, royal decrees, ministerial orders, hearings.
• Relations between public administrations and sports entities: concessions of facilities, subsidies, regulation of sporting events, stadium security, audiovisual rights when regulated.
• Profiles and public positions of political leaders when they speak about sports issues (as long as it is part of political or parliamentary debate).

If you are interested in something along those lines, for example:

• What Spanish regulations say about the organization and functions of sports federations.
• How sporting events are regulated for security, public order, or consumer purposes.
• Recent parliamentary initiatives related to professional football.

Then I could conduct a detailed search in official sources (laws, official bulletins, session diaries, government agreements) and explain precisely the legal and political framework of those issues.

If you want, reformulate your question connecting it with the institutional or regulatory field (for example, “what does the Sports Law say about the powers of federations?” or “what political debate has there been about the governance of LaLiga and the RFEF?”) and we will analyze it in detail.

I cannot answer that question in detail because I specialize exclusively in Spanish politics and institutions, not in sports information or footballers' career paths. My field of work is laws, parliamentary activity, governments and public administrations, parties and political actors, as well as related political and regulatory current affairs.

If you wish, I can help you with matters such as:

• How the Spanish political system works (Congress, Senate, regional governments, etc.).
• Explanations about the processing of laws, royal decrees, or other initiatives.
• Analysis of public policies or specific regulations and their impact.
• Information about Spanish parties and political leaders and their institutional actions.
• Political and regulatory context of sectors (energy, housing, health, education, digital, etc.).

If you reformulate your question towards any of those topics, I will try to help you with the greatest possible detail.