Arsenal sporting director Edu Gaspar has insisted that his side face a tough tie against FC Porto in the Champions League.
After winning their group, the Gunners have been given a draw against the Portuguese giants.
While Porto are not the force they were in the past, Edu does believe they pose a serious challenge.
"We are going to play against a club that is very used to playing in the competition because they play in in every single year and they have a lot of players as well with big experience," he said after the draw.
"We have to understand how are we going to play and respect them as much as we can. We will play our game and see if we can go through this stage.
"We can see how they are playing, how organized they are, and the players that they have. Porto is a club that you have to have to be really prepared to play against or we'll have problems, so what we have to concentrate on is maintaining our levels and the way we are playing."
