Ellis-Yolmen is currently an unrestricted free agent after he signed a one-year rookie contract extension for the Crows last year.
Adelaide was reportedly keen on re-signing Ellis-Yolmen in the second half of the season, but a deal has still not been reached, leaving the 26-year-old able to evaluate his options with other AFL clubs.
Should Greenwood and Ellis-Yolmen both depart, it would leave Adelaide with a large gap in their mature-age midfield stocks.
Ellis-Yolmen has only managed 39 games since being drafted in 2011, having sustained two serious knee injuries, most recently an ACL injury in 2017.
He seemed to have finally cemented himself in the Crows’ best 22 this season but was then hampered by calf injuries in the second half of the season.
The big-bodied Crow made his debut back in 2014 and was selected in Australia’s indigenous side that took on Ireland in the International rules series of 2013.