He returned to pre-season training with Mansfield last week, to tell them on Friday that he wanted to leave the Field Mill club, thus making himself a free agent.
Yesterday he trained with the Millers at the Keepmoat training base with the Millers first team squad.
"Michael is still considering his options and there's a contract on the table for him if he decides to join us." Mark Robins told the 'Tiser.
Robbo is still on the lookout for a new targetman after Derek Holmes signed a contract with St Johnstone. As usual MillersMAD will bring you the latest as we get it.