Barcelona are preparing to go over a month without one of their key players and alarming numbers have shown they can ill-afford to go without him.
Xavi Hernandez's side have enjoyed a fast start to the season, and the LaLiga titleholders currently sit atop the table after six match days.
Saturday's tie against Celta Vigo saw them claw back a win from two goals down, after an efficient brace from Robert Lewandowski sparked a comeback capped by a late winner courtesy of Manchester City outcast Joao Cancelo.