Raiders interested in FA tackles

In my series " Raiders have questions, we've got answers: Oline " I suggested that the Raiders take a long look at free agent tackle Khalif Barnes of the Jaguars.

[TexasRaider]

I think Khalif Barnes would be a good aquisition since he's only entering his 5th season and has done well in the zone scheme and can play either tackle. Marvel Smith is kind of questionable to me since he's entering his 10th season and is coming off an injury.