The transfer sees Gallagher, a key player for Chelsea, head to Atletico Madrid in a separate deal worth £34 million. The midfielder is expected to travel to Madrid to complete the move, marking a significant change for both clubs.
Omorodion's move to Chelsea comes after an impressive season at Alaves, where he scored eight goals in 35 matches. His performances caught the attention of the Blues, who have been keen to strengthen their attacking options.
Meanwhile, Atletico Madrid is set to welcome not only Gallagher but also Manchester City's Julian Alvarez, in a deal worth up to £82 million. The transfer is expected to be completed soon, marking a significant investment for the Spanish club.