As Rangers jet into Portugal to face Benfica in the Europa League, the match has added significance to Ibrox loan forward Fabio Silva. The Portuguese striker, 21, is a former Benfica youth product and – after initially swapping boyhood club FC Porto for the Benfica as a kid – came through at the club’s arch os dragões rivals against the backdrop of substantial hype in Portugal. Sporting Lisbon legend, and the man who brought Fabio Silva through at FC Porto, Manuel Fernandes once tipped the teenager to emulate the career of Cristiano Ronaldo. No pressure then. Now, almost four years on from bre…