Madrid-based journalist Sid Lowe says Barcelona are over-dependent on Lionel Messi and are making it far too easy for opposing teams to score against them.
The La Liga leaders slipped to a 2-0 defeat to AC Milan at the San Siro on Wednesday night in the first leg of their Champions League last-16 tie.
"It was the tenth game in a row they have conceded a goal," said Lowe. "It feels a little bit too easy to score against them at the moment."