Visitors ADO are currently sitting in ninth place, just four points off the top five, while Heerenveen are two places and one point better off, eyeing up a share of AZ Alkmaar's current league position. Defender Calvin Jong-a-Pin is eager for Heerenveen to take that chance, but knows his side will have to produce something special in the second half of the season if they are to play outside of Holland in the next campaign. "We know what to expect when the league resumes," he said. "A sharp opponent. "The match against ADO is very important. We go for the three points. We have to, because we want to get in the fight for European football. "Against ADO, we know we have to go twice as hard." Ajax closed the gap on the leading pair of PSV Eindhoven and FC Twente with a 2-0 win over Feyenoord on Wednesday night, and they face Utrecht on Sunday, although it remains to be seen if suspended striker Luis Suarez will be a spectator with Liverpool thought to be chasing his signature. Attila Yildirim made his Utrecht debut in Wednesday's 2-1 win at VVV-Venlo and is now hopeful of appearing against the Amsterdam giants. "This is what you dream of," he told www.fcutrecht.nl. "We are going to the Ajax game with a good feeling." Ola John made his FC Twente debut in their 5-0 hammering of Heracles Almelo on Wednesday, and he wants to continue to be involved in the first team ahead of their trip to FC Groningen this Sunday. He told www.fctwente.nl: "It is now important for me to continue to keep working hard and show the coach what I have. "Our training camp in La Manga went very well, it is important to draw a line and keep training and performing." Elsewhere this weekend, Feyenoord host De Graafschap on Saturday, with uncertainty surrounding the future of captain Ron Vlaar. "It's not about money for me," he said of his refusal to consider his future with the club beyond next year. "I know that I'm good enough for the best clubs in the Eredivisie and Feyenoord are normally one of those clubs. "I'd like to know whether I can achieve more." PSV, who lead the table by just a solitary point, head to struggling VVV on Sunday, while Roda JC take on third-bottom Excelsior. Saturday's matches see Heracles look to pull away from the bottom of the ladder as they face high-flying AZ, Willem II take on Vitesse Arnhem and NEC Nijmegen face NAC Breda.
