With the transfer windon closing this weekend Keller is hopig to get a chance at Cardiff City.
"If I don't sign for Cardiff I may not be able play again this season," Keller told the Echo,
"Cardiff are an ambitious, progressive club. I am under contract at FC Zurich until 2005, but I can't see it is possible for me to play there again while the current coach remains. It is a difficult situation, but we have agreed it is better for me to play elsewhere on loan for six months. If I do sign for Cardiff and do well, I would think Zurich will let me leave on a free transfer at the end of a loan spell."