Barcelona coach Xavi Hernández has said the club are not in crisis following a week of criticism after defeat to Shakhtar Donetsk in the Champions League. The unexpected loss to Shakhtar in Hamburg followed what Xavi conceded was an “unacceptable” performance against Real Sociedad, despite winning 1-0, and a 2-1 loss to Real Madrid in the Clásico. – Stream on ESPN+: LaLiga, Bundesliga, more (U.S.) “This is not comparable. This…