Speaking at a press conference on Wednesday, Marcelino said he had decided to quit in order to take over at a "great" club, although he did not reveal any names.
Marcelino, who has been linked with a move to Valencia, has been a huge success at Racing who he led to the Copa del Rey semi-finals and a sixth-placed finish in La Liga, earning the Cantabrian club their first crack at Europe.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms