Barcelona legend Jose Maria Bakero senses a dip in form from Lionel Messi.
Bakero feels injuries and a change of position are taking their toll on the Argentina captain.
"He's the best player I've seen," said Bakero, "but he's also still human.
"First, as all teams will have taken notice, tactically Barca are playing Messi more away from the penalty area.
"Second, the years are adding up and although he is young, there are players like Neymar and Luis Suarez who are coming through."
Bakero added: "It's now up to (coach) Luis Enrique to make this tridente work."
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