Albion recorded a memorable 4-2 win on spot-kicks against Joe Montemurroâs star-studded squad, and the Seagulls manager says her team will need to produce a similar display again to have a chance of causing another upset.
She said, âThe expectation is that they will win the game as theyâre top of the league at the moment, and they have so much quality and depth in their team.
âItâs going to be tough and after we beat them in the Continental Cup, theyâll come back and want to right that wrong.
âWhen we played them at their ground, we were poor, so we have to do better than that, perform well, compete and keep going.
âBut on the flip side, who wouldâve predicted that Bristol would beat Man United, weâd get a point off Chelsea or that weâd beat Arsenal in the Conti Cup? Anything is possible, and what we want to do is show another good account of ourselves.â
The Brighton & Hove Albion boss spoke to the media ahead of the the club's Women's Super League clash with Arsenal.
One of Arsenalâs biggest threats will be Vivianne Miedema, who has scored an astonishing 24 goals in 16 appearances in all competitions this season, and Powell highlighted the importance of giving the Netherlands international the respect she deserves.
âWe have to recognise what her qualities are and what sheâs good at. Sheâs in and out of the game very cleverly, not because she doesnât want to be, but because she chooses her moments to get involved.
âWhen defenders think sheâs not interested, thatâs when she comes alive. Sheâs very clever and for any defender that comes up against her, itâs about concentrating for 90 minutes.
âEven if the ball is at the other end of the pitch and she doesnât seem interested, we have to be mindful she will come alive in the moments where no-one expects.â
Albion have completed the signing of Cecilie Fiskerstrand.
The Albion manager also spoke about the recent arrival of Norway international goalkeeper Cecilie Fiskerstrand, as well as the new contract awarded to Megan Walsh, and how the competitions for places in goal will spur on all of her shot-stoppers.
âWeâre really delighted to bring in Cecilie, and Alex Penny, our goalkeeping coach, has been tracking her progress for a while.
âSheâs a very good addition and add to the competition for places among the goalkeepers. We already have two very good goalkeepers, but you always need a third, because it adds a bit of strength in that department.
âGiving Megan Walsh a new contract was also very important to ensure we have three top-class goalkeepers, including Sophie Harris.
âWe now have three very good goalkeepers, and there is some brilliant competition for places.â