The Thai internationals were signed by City in November after endorsements from club owner Thaksin Shinawatra, but both players are not expected to feature in manager Sven Goran Eriksson's plans this season.
With the prospect or regular first-team action on the horizon, Sukha is determined to adjust to a new lifestyle and make an impact at Zurich.
"I will try to break into the club's first-team squad as soon as possible but it will not be easy," Sukha told The Nation.
"It is a completely new environment for me. I need to learn many things such as the language, food and new surroundings.
"I might not be at the top of my form as I have not played competitively for a while, but I will definitely put in my best effort."
Meanwhile, City's third Thai player Kiatprawut Saiwaeo is reportedly in talks with Belgian side Club Brugge about a possible loan move.