Not sure one (reportedly fairly minor) injury should change our thinking on Neto. If this injury was enough to go from wanting us to sign him to not wanting us to sign him we probably shouldn't have wanted him in the first place.
I know very little about these things, but if there's a reasonable concern there over his fitness long term we probably should look elsewhere. Lovely player though. Assuming the club will do their diligent evaluations before considering him an option.
He missed a whole season two years ago with a knee injury and he's had some others as well. I don't think he's worth it, but he's hot right now and we'll continue to be linked with him since most pundits, fans and journalists know very little about players outside the PL.