"Lately, mentally it has been difficult," Samba told L'Equipe. "I try to maintain my level of performance but I sense that it is time for a change as the club doesn't evolve at all.
"I'm resigned. I've always put the interest of the club before my own. I've invested a lot, always tried to lead by example but things have not gone as I was told. I hope people understand me."
The 27-year-old, who recently signed a new five-year deal at Ewood Park, could be the first player to depart the Lancashire side, with Junior Hoilett being widely tipped to also exit the club this month.