The Ivorian was not happy with his former club's tactics in selling him to The Cherries.
The Ivorian, who scored 13 goals in his final 13 games of last season, joined for an undisclosed fee this week – reuniting with a team he previously played for on loan back in 2007-08.
But the deal, which could have been straight forward, became a dragged out affair after problems with his former club.
Gradel took to his social media account yesterday to slam his former club’s presidents, he then explained his comments to The Bournemouth Echo:
"It is sorted. I love St Etienne and I am very happy to have played for the club.
“The only thing I am not happy with is the two presidents because they have been very bad. They did not keep their word and when you say something, you need to do it.
“Unfortunately, that is football and that is life. It will not take away the love I have for the club and I respect the fans.”
It was reported that Saint-Etienne believed that money was still owed to them from Gradel regarding the deal, however those issues were soon ironed out.
Gradel cost Bournemouth a fee reported by The Echo to be in the region of £6 million. The club will be hoping he is the star player they need in order to keep them in the Premier League this season – which many a pundit is predicting for them.