The Blues meet Sunderland tonight.
"I was analysing their match against Newcastle at home and Man City at home, these were the matches I focused on," the Portuguese said.
"I think they are better than the points they have, the quality of their players is not comparable with some teams in that part of the table but I think they are in a moment where one point doesn't make a big difference.
"They need three points, they need two or three victories to get out of the dangerous area. I don't think they can play in a defensive way, that is why they have a positive approach because they need to win matches.
"I think Gustavo's style is to try and play good football, I think we have two very difficult matches."
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