The 23-year-old played for all 90 minutes for the East Flanders club in the 0-0 draw against Cercle Brugges at the Jan Breydelstadion on Saturday.
Reuben did little wrong as Beveren battled to earn a share of the spoils.
The Nigerian midfielder had little joy at Scottish Premiership club, Kilmarnock (where he made just two league appearances) and will be looking to restructure his career in Belgium.
Meanwhile, the Beveren trainer, Bob Peeters has spoken of his admiration for another Nigerian, Michael Uchebo who led the line admirably for Cercle Brugge on Saturday night.
Uchebo scored what appeared to be the winner late on but the effort was chalked off after he apparently handled the ball before applying the final touch.
“We knew we were in for a tough match against a good footballing Cercle Brugge with a very good Michael Uchebo (in their ranks),” Peeters told the Waasland-Beveren official website, www.waasland-beveren.be.
Uchebo, who has scored five goals in 23 league appearances for Cercle Brugge, this season, was sent off in the final minute of injury time after picking up his second booking of the night.