Silva left PSG over the summer for the Blues.
He told RMC: "Mauricio Pochettino did a good job with Tottenham, I think he comes very motivated, 20 years after playing for PSG. He knows the club a bit. Of course that has changed a lot, but he knows football a lot, he will work with very high level players. I am still a supporter of PSG."
The veteran added: "It's difficult but it was predictable that this was going to happen. Not now, but being inside, we knew there were situations that had to be changed. In my opinion, Leonardo took the situation in hand, he made his choice.
"We do not know if it was good, it was not at all for Tuchel and his staff, especially after the match (4-0 defeat of Strasbourg). This change was not planned at this time."