I would have thought it would be a good move. He's old, so he'll be a non-expensive short term solution while we stick around with DC/ Molinaro for a while. And he's the kind of overlapping fullback that you would need for a narrow 4-3-1-2 / 4-3-2-1 formation, so we would be halfway there.
But I've only seen him for the NT recently, so I'll take Fred's word on how sucky he is for Lyon.
Next candidate?
P.S. I think Genoa are in control with regards to Criscito, so I doubt he'll be here next season.