"I'm devastated," he told the Echo
"I woke up on Monday morning thinking I was going to be a Cardiff player this season and fight for my place with Martyn Margetson and by the end of the afternoon the decision had been taken out of my hands, and that's the most disappointing thing.
City completed the signing of Tony Warner last Friday and at the same time signed up Margetson for 2 more years.
"I understand that for the sake of my career I have to be playing first team football" Alexander continued.
"But I'm still a little shell shocked by it all to be honest. I'm disappointed in the way its happened and sometimes you think you deserve better, but football is all about opinions and the manager has just decided he wants a new 'keeper.
"Now I have to go and resurrect my career somewhere else because I feel it's going down the drain."
Alexander was City's goalkeeping hero in the 2003 play offs being the only keeper in play off history to keep three clean sheets. He paid the price for a few bad performances mid season of the Division 1 campaign and never regained his place from Martyn Margetson.