They are keen to take a look at the 23-year-old, who has become a target of fan criticism.
"I don't know exactly what will happen," admitted Ahamada. "One thing does seem certain - that I cannot play for Nantes again.
"I love the club and owe it everything, but the way the fans treat me it has become very complex.
"Unless I get an offer I can't refuse, I am still on the look out and will give myself until the end of the month to make a decision."