Carra says he would leave the club and retire from professional football after 17 seasons at the end of 2012-13.
"But he knows himself better than anybody, and if he thinks it is time to hang up the old boots, that is totally his prerogative. It is always a difficult decision for a footballer - as hard a decision as you can face as a professional.
"It is more difficult because playing is the best part of your career - especially at the level he has played at and is playing at. That makes it so much more difficult to retire. But it's Jamie's shout, his call.
"I'm just surprised. I thought he had a bit left in him yet.
"The fans hold him in such high esteem because they can relate to him.
"Everyone who has played football has had a bad game at some time but he has never once had a bad attitude. The fans will always stand by you if your attitude is correct - and Jamie's has always been spot on. No one could ever doubt that.
"We just have to be grateful that Liverpool has had a servant like Jamie. As a local boy it is always special and Jamie is a local boy who has never once got carried away with it all and who can relate to the supporters."