The Albion not only face United this weekend in the Premier League, but have a match against them in the Carabao Cup next midweek.
Brighton made it into the fourth round of the cup, picking up their third win on the bounce.
Asked about playing United twice, Potter told the club website after the 2-0 win against Preston away from home: "It's a big week for us with those two matches and then Everton before the international break.
"That's what we wanted because we wanted to go through in this competition.
"Players always want to play and the best thing for them is to be out on the field on nights like tonight to keep everyone in the group ready for when they're needed.
"You saw that today – there was a willingness to run and fight for the team and get the result and that's why I'm very happy."