No, not really. Firstly, I think marketing was one of the most important aspects of this deal - after Dempsey left, we needed another US player to attract fans from the States (besides Friedel). Maybe I'm wrong, but I think Yedlin is another Khumalo.
Secondly, he is probably not that good and he has admitted himself he has struggled for training. Knowing that Pochettino favours young players, I don't think he would have bought another RB if Yedlin was as good as some people seem to think.