Despite an iron grip on domestic trophies, Barcelona have been haunted by their recent failures in the Champions League and there are concerning signs for the Catalans as they prepare for Wednesday’s last-16 first leg away game to Olympique Lyonnais. Ernesto Valverde’s side fly to France after an uninspiring 1-0 win at home to struggling Real Valladolid on Sunday, which consolidated their lead at the top of La Liga, but left plenty of doubts about their capabilities of winning Europe’s top prize. The drab victory over Valladolid, in which Lionel Messi scored a penalty and missed one, followed a goalless stalemate at Athletic Bilbao, a 2-2 draw with Valencia and a 1-1 draw with Real Madrid in the Copa del Rey semi-final first leg. Coach Ernesto Valverde has played down the significance of his side’s recent slack displays. “Sometimes you cannot be brilliant in every game, but I think the team is ready to play at its very best,” he said. Defender Gerard Pique, however, was more scathing of Barca’s performance and warned of the potential consequences of their lacklustre displays. “We were not the Barca we wanted to be, the result was good, the sensations were not,” Pique said….