The 26-year old Japanese striker, of Dutch descent, is currently with Eredivisie outfit Vitesse but could possibly be on the move to the UK soon according to the club's technical director Ted van Leeuwen.
"There have been a couple of agents who contacted us," he told Dutch magazine Voetbal International.
"They told us they were working for English clubs. I have told them they could send in a mail or fax on the writing paper of that specific club. After it I haven't heard anything more.
"Mike is a member of the national team of Japan. It's logical that clubs are interested.
"Is he for sale? Everyone is, but we don't want to see him going.
"However, the market is still open for another month and we also have other options to fill in."