Palace lost 1-0 away to Charlton in the first game of the season, all the way back in September.
Potter was full of praise for the Addicks boss Karen Hills, and was under no illusion as to the scale of Sunday's challenge.
"They're really close to the finish line now. I think what Karen and her staff have managed to do this season has been unbelievable.
"To go that many games unbeaten and to be super, super consistent and keep pulling away with results and points - there's no fluke to that.
"That's not luck. They're where they deserve to be. We've got to make sure that we can match that.
"It's a very long time since we played them last. Obviously, it was the first game of the season. It feels like forever ago.
"Both teams have changed quite a bit since then. We're looking forward to it. We know it's going to be a really, really tough test.
"They do what they do really, really well. There's no coincidence in the fact. We've got a huge amount of respect for where they sit in the league and what they can achieve this season.
"We've got our own goals and our own ambitions as well. That starts with us putting on a good performance and trying to take all three points."
Over 3000 fans have already secured their spot for Sunday's game - you can get yours by clicking below.
**Kick-off is at 14:00 BST at Selhurst Park on Sunday, 29th March.**