Chelsea winger, Willian said there was no chance that he would be at the club had the former head coach, Antonio Conte, still been in charge.
Conte won the 2016-17 Premier League title with the Blues but was laid off in July after finishing fifth in the 2017/18 Premier League season.
The Brazilian was linked with Barcelona, Real Madrid and Manchester United this summer but stayed committed to the Blues in early August.
Chelsea is at home to Arsenal in their next league fixture on Saturday, and Willian believes that his Chelsea side has a different style under the new manager, Maurizio Sarri, and he believes the team can cause Arsenal problems.