The 26-year-old midfielder is a free agent after leaving relegated Dutch Eredivisie side NAC Breda at the end of last season.
After failing to impress United manager Steve Evans in his maiden trial game, the former Ajax winger and Dutch U21 international Jeffrey Sarpong will travel with the Millers for their Scottish mini tour.
He played at Alfreton on Tuesday night but didn’t do enough to convince Evans that he was worth a shot. Sarpong will now travel to Scotland, where Rotherham will play Greenock Morton, Dundee and Patrick Thistle.
“We need to have another look at him,” said Evans. “One game wasn’t enough to make a decision so we’ll take him to Scotland to see what we can do.”
Meanwhile Spanish Primera Division side Malaga are also reported to be interested in signing the versatile winger after reports emerged in Spain.