Gunnar, an Under-21 Faroe Islands international, played in Tuesday night’s reserve match against his old club Blackburn Rovers, having signed a two-and-a-half year deal for City last month as a free agent.
But the Blues’ goalkeeping strength is such, with England’s Joe Hart , young Dane Kasper Schmeichel and reserve keeper Tobias Johansen already on Mark Hughes’ roster to challenge current No.1 Shay Given, that Nielsen, now 22, will get more experience elsewhere.
He is treading an increasingly familiar path between the City of Manchester Stadium and the Racecourse Ground. Blues left-back Sam Williamson joined Dean Saunders’ club earlier this season, and midfielder Angelos Tsiaklis had a loan spell there this winter.