Manchester City boss Pep Guardiola is wary of Champions League opponents Sporting CP.
City meet Sporting in the round of 16 and Guardiola is now preparing for the match.
After victory over Brentford last night, he said: "The Champions League is just around the corner, and the next FA Cup tie is also coming soon.
"We have a lot of difficult games ahead. I saw Sporting, and we will have to prepare well because I was very impressed with what they did.
"And in the Premier League, as we saw against Southampton [one-all draw], every game is complicated."