The Anfield manager said the Brazilian's choice was "not football related" when asked at a press conference earlier today.
The Anzhi star was first linked with Liverpool, before it then emerged that he was set for a medical at White Hart Lane ahead of a move to Spurs.
But Willian now looks set to join Chelsea after the west London club hijacked Tottenham's move for the playmaker.
And, while Rodgers admitted he was disappointed by Willian's decision to snub Liverpool, he believes his choice was not determined by "football reasons".
"It's disappointing because this was a player who would have been perfect for us." Rodgers said. "It wasn't a football [decision] and I don't really want to go into it…that's for us as a club really.
"The bottom line is he hasn't come here for whatever reason and we move on. We identify targets and then try and get the deal done financially. That's how it was.
"The club has pushed financially as hard as they felt they could but it wasn't to be."
Willian only joined Anzhi in the January transfer window but the Russian club have signalled that they're shifting their transfer strategy away from highly-paid stars.
Willian and Samuel Eto'o have been linked with the Premier League in recent weeks as both are expected to leave Russia.