The former Rosenborg forward has only started five out of a possible 12 games for Santander this season and he hardly got a look-in in the last campaign and he wants a move.
"I want a move," said Rushfeldt. "It is hard to play out of your skin when you finally get your chance. Quite impossible actually.
"Because when you are not playing regularly, you need luck to play well when you finally get the chance. It feels hard now."
Rushfeldt has failed to reproduce the goalscoring exploits he experienced with Rosenborg in Spain but he admitted that he does not want to move back to his former club.
"I miss playing in the Champions League," said Rushfeldt. "But I knew what I did when I came here and I have no regrets.
"Other than not getting to play, I am having a good time here.
"The most important thing for me is to play first team football regularly