The Samurai Blue regular had expressed interest in moving to Italy or England, but will instead play for the Belgian giants after two shining seasons at Lierse
The same site reported a transfer fee of €200,000, while state-managed television station RTBF claimed the Maurice Dufrasne club will pay three times that amount.
The 29-year-old first joined Lierse from Kawasaki Frontale after the 2010 World Cup, and, in addition to wearing the captain's armband in the 2011-12 season, was voted the club's most valuable player for two consecutive seasons by supporters.
The move comes as somewhat of a surprise after the Samurai Blue regular indicated earlier this year that he was ready to leave Belgium for a new club in Italy or England, with several rumours involving Milan emerging. Instead, Kawashima will play in the Pro League for a third straight season.
Should the transfer go through as expected, Kawashima will visit his old club as early as August 4 when Standard travels to Lierse in the second week of league action.
Standard finished the 2011-12 season in fifth place, while Lierse took part in the country's Europa League play-offs.