Former Barca president Joan Laporta revealed earlier this month that Guardiola demanded Eto'o be sold when he first took over the coaching reigns - no matter what the price.
"I'm not at the club because God wanted it that way," Eto'o said.
"Pep is human like me. He made a decision for the good of Barca, I do not share it, but that's life.
"Today we say hello to eachother and talk calmly, it's all over. But at the time, it was difficult, I admit that."