Xavi has tested positive for COVID-19 and will self-isolate.
Xavi, 40, wrote on Instagram: "Today I will not be able to accompany the team on the return to the official competition.
"A few days ago and following the @qsl protocol, I gave a positive result in the last COVID-19 test they performed on me. Fortunately I am in perfect condition but, following the protocol, isolated until I have overcome it.
"When the health authorities allow me, I will join my daily routine and work with more desire than ever. I thank all the authorities and especially those responsible for @qsl, @qfa and @alsaddsc for putting at our disposal all the means for early detection that prevents further contagion and guarantees a normal development of the competition."
Xavi turned down an opportunity to coach Barcelona earlier this season.