Paris Saint-Germain's Lucas Moura admits his side go into their Champions League tie with Barcelona as underdogs - and says it's "impossible to stop" Leo Messi.
"No team is unbeatable, but..."
PSG have faced Barça twice before in the tournament's knockout stages, with Los Azulgranas winning through on both occasions.
And speaking ahead of the clubs' last-16 first leg in Paris on Tuesday night, the Brazilian said: "No team is unbeatable, but for me they're favourites of course."
"They're the best team in the world," added Moura.
On Messi: "You have to tie him up"
The 24-year-old also heaped praise on Barcelona ace Messi, conceding: "For me it's impossible to stop him. You have to tie him up.
"The tactic is to prevent the ball from getting to him. You have to be really organised."