[3] In August 2011, FC Utrecht announced the signing of Fernández on loan for one year to cover a possible departure of Michel Vorm.

[9] On 19 July, Fernández returned to play for Botafogo in a 1–1 draw against the Argentine team Patronato, a game valid for the Copa Sudamericana.

At the end of the season his contract was not renewed, so during his time at the Rio de Janeiro club, he played 218 matches, becoming the sixth goalkeeper with the most games in Botafogo's history.

[11] Fernández debuted with the Paraguay U20 national team in the 2007 South American Youth Championship replacing the injured Blas Hermosilla.

He was selected for the Paraguay senior squad for the 2011 Copa América, remaining an unused substitute as the team finished the tournament as the runner-up.