Arsenal defender William Saliba admits their Champions League clash with Porto is now crucial.
Porto hold a 1-0 lead for the second-leg of their round of 16 tie.
Saliba said, We have to win on Tuesday and we will give everything, we can't wait to play on Tuesday.
"We were focused on the game [with Brentford] and now we prepare for Porto at home and we will be ready.
I think we were horrible [to play against in] the last seven or eight games and now we have to keep going like this, because it is very tough to beat us at home and we will give everything."
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