Fabrizio Romano a well-known football transfer expert has confirmed that a 50% sellon Clause is in place allowing Chelsea to potentially benefit financially from the future sale of a former Wonder kid here's a breakdown of what this means what is a sellon clause a sellon clause is a contractual agreement where a club retains a percentage of the transfer fee if a player is sold again in the future this is often used in transfers to benefit the selling Club if the player's value increases details of the 50% Clause current context the Clause applies to a specific former Chelsea player who has been transferred to another club if this player is sold again Chelsea will receive 50% of the transfer fee from the subsequent sale potential impact this means that Chelsea could receive a significant financial boost if the players's market value Rises and they are sold for a substantial fee in the future don't miss out click that subscribe button and turn on notifications thank you