Barcelona could be without vice-captain Xavi for tomorrow's Champions League quarter-final tie against AC Milan.
The 32-year-old is currently suffering with a muscular problem that forced him to sit out of a team training session yesterday afternoon.
Xavi is expected to undergo a number of tests with the club's medical staff at an arranged session later today.
The result of that examination will determine whether or not the Spanish international will be able to take his place in the Barca starting lineup.
Barca host the Italians having drawn 0-0 in the San Siro last week.
