He told The Sun: “Destiny has presented me with the most ambitious, biggest opportunity I’ve ever had.
“I’m well aware a coach can be sacked because of bad results — and that a coach can receive an offer which is simply impossible to refuse.
“This is precisely the challenge which I have been wrestling with over the last few days.
“I’m sure that the love Seville fans have for their club means some will not understand my decision but life can bring you special opportunities which you cannot possibly ignore.
“There is a saying that occasionally the train goes past and you must catch it because it will never come back, and that’s true even when it is passing at an inopportune moment.”