The bookmakers are fairly clear: Willem II is seen at Wedgekantoor Unibet as a favorite for the victory today. A victory for the Tilburgers is currently giving you your bet twice, while with a win from Telstar you get 3.75 times your bet. A draw will give you a bet 3.5 times.
You can also bet on a victory from Willem II or Telstar with a possible extension and penalty shootout series. Even then Willem II is a favorite with a quotation of 1.4 compared to 2.75 for Telstar.