FC Porto goalkeeper Diogo Costa is unfazed about taking on an in-form Arsenal in the Champions League Round of 16 first-leg tie.
The Gunners have enjoyed some high-scoring wins lately and have won their last five Premier League games.
With Arsenal set to take on Porto later this Wednesday, the big clash could not have come at a better time but Costa insists Arsenal have 'weaknesses' to exploit.
Quoted by HaytersTV, Costa said: "Of course [Arsenal] have weak points.
"Of course, I’m not going to tell [you] what we’re going to do. We’re going to do our best job to win that game.
"If they are the favourites [to win the competition], they need to show us they are the favourites."
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