The 29-year-old is ready to leave Villa Park in search of regular first-team action.
“I think it is most likely Marlon will move on this summer,” Harewood’s agent, Phil Sproson, told skysports.com.
“He is keen to be playing regular first-team football and he accepts the situation at Villa.
“There are a number of clubs interested in Marlon, including Hull and Middlesbrough, but nothing has been decided yet.
“It depends on whether any interested club can agree a deal with Aston Villa before anything can happen.”
