I think Sakho definitely the better player of the two but a lot more expensive, 3 years older and gives the impression that he thinks he is a big club player, bigger than us anyway.
With the money saved (transfer fee and wages) surely we can find a left back!
To get Sakho I think we will have to sell Evans, not needed with Wimmer. Sakho or Evans? Irrelevant I know but I would have Evans every time.