Tottenham have secured a sixth-placed finish in the Women’s Super League and are seven points behind United in fifth.
In a dress rehearsal for Sunday’s final, the two sides recently played out a 2-2 draw in the league which saw Spurs concede a stoppage-time equaliser.
Captain Bethany England said Spurs’ mental approach to the game has been key to make sure the occasion does not get the better of players.
“We have to be very sensible in our approach to this game,” she told the Women’s Football Weekly podcast.
“We have recently just played Manchester United and everyone can probably get a bit too high with the highs and low with the lows and this is going to be a completely different ball game at a sold-out Wembley.
“The pressures of it, the people that have never played on that pitch before, it’s a different type of game to playing at Leigh Sports Village.”