Biseswar had two Eredivisie loan spells while at Feyenoord. For the 2006–07 season he joined Heracles Almelo. It came after he went on a trial for the club and were among six players to be cut following Erwin Koeman’s decision ahead of the new season. Biseswar made his Heracles Almelo debut in the opening game of the season against FC Twente, where he came on as a substitute for Kai Michalke in early first half, then scored and set up two goals, in a 3–0 win, earning himself a Man of the Match award. Biseswar made 26 Eredivisie appearances for the club, in which he scored two goals. However, Heracles Almelo decided not to retain Biseswar for disciplinary reasons.