Gutierrez will spend the rest of the season at Carrow Road after being told by boss Alan Pardew he had no future with the club despite spending five years as a regular in the first team.
Pardew only called on his services twice this season and the Argentinian admits he has no idea why he had not been utilised since the first week of October.
"The manager told me in December I was not going to play anymore and told me to find myself another club," Gutierrez is reported as saying.
"I don't know why it happened and I still don't understand what I did wrong.
"There were no rows with Alan Pardew or anything like that. He just said I needed to leave and that was that.
"I honestly don't know why I wasn't playing, you will have to ask the manager that. He just made his decision and that was it. Something must have happened - but I don't know what."