Krishna, who captains Fiji and has the most goals and appearances for his country, has previously turned out for ATK FC and ATK Mohun Bagan in the Indian Super League (ISL)
With 14 goals and three assists, the 29-year-old helped his former club UD Logrones secure a place in the Primera Division RFEF (Spanish third-tier) promotion play-offs.
Having already played two Indian Super League (ISL) seasons under gaffer Manuel Marquez, the forward is prepared for another season - this time showing his flair in front of the fans.