Forlan believes Sanchez Flores had a problem with him.
"Quique Flores has been in charge of several teams and he has had problems everywhere he has been," the former Manchester United man said. "We all know how this gentleman works.
"He had a personal problem with me and made that very clear, although I didn't do anything wrong. I had absolutely no problems with him.
"Perhaps my attitude towards him wasn't perfect either, but I've never before had any problems with a Coach.
"I'm 32 now and have already worked with several tacticians."