Fair point, the Rojo deal probably did ensure that Nani went to Sporting rather than a bigger club.
Still though, my point stands. If top clubs rated Nani that highly and were willing to write off his last few years (as sajeev suggested we should) then there wouldn't have been a need for him to rehabilitate himself at Sporting first.
Perhaps who knows. It´s all speculation. I have another point of view that is corroborated by Nani´s recent interviews in Portugal. This Sporting loan deal came from special circunstancies (United paying his wage and the chance of playing in the Champions League again in his boyhood club) and the fact that United and Sporting have very good relationship. If it wasn´t for it he would probably be in Spain or Italy (he aluded to that).